index.php

<?php
/*
 * This file is part of MODX Revolution.
 *
 * Copyright (c) MODX, LLC. All Rights Reserved.
 *
 * For complete copyright and license information, see the COPYRIGHT and LICENSE
 * files found in the top-level directory of this distribution.
 */

$tstart = microtime(true);

/* define this as true in another entry file, then include this file to simply access the API
 * without executing the MODX request handler */
if (!defined('MODX_API_MODE')) {
    define('MODX_API_MODE', false);
}

/* include custom core config and define core path */
@include(dirname(__FILE__) . '/config.core.php');
if (!defined('MODX_CORE_PATH')) {
    define('MODX_CORE_PATH', dirname(__FILE__) . '/core/');
}
if (!defined('MODX_CONFIG_KEY')) {
    define('MODX_CONFIG_KEY', 'config');
}

/* include the autoloader */
if (!@require_once MODX_CORE_PATH . "vendor/autoload.php") {
    $errorMessage = 'Site temporarily unavailable';
    @include MODX_CORE_PATH . 'error/unavailable.include.php';
    header($_SERVER['SERVER_PROTOCOL'] . ' 503 Service Unavailable');
    echo "<html><title>Error 503: Site temporarily unavailable</title><body><h1>Error 503</h1><p>{$errorMessage}</p></body></html>";
    exit();
}

/* start output buffering */
ob_start();

/* Create an instance of the modX class */
$modx = \MODX\Revolution\modX::getInstance();
if (!is_object($modx) || !($modx instanceof \MODX\Revolution\modX)) {
    ob_get_level() && @ob_end_flush();
    $errorMessage = '<a href="setup/">MODX not installed. Install now?</a>';
    @include MODX_CORE_PATH . 'error/unavailable.include.php';
    header($_SERVER['SERVER_PROTOCOL'] . ' 503 Service Unavailable');
    echo "<html><title>Error 503: Site temporarily unavailable</title><body><h1>Error 503</h1><p>{$errorMessage}</p></body></html>";
    exit();
}

/* Set the actual start time */
$modx->startTime = $tstart;

/* Initialize a context */
$contextKey = 'web';
if (is_readable(__DIR__ . '/config.context.php')) {
    $contextKey = require __DIR__ . '/config.context.php';
}
$modx->initialize($contextKey);

/* execute the request handler */
if (!MODX_API_MODE) {
    $modx->handleRequest();
}