10000 [WaitingCodeMerge][Book][ServiceContainer] Added new 2.3 feature '@@' escaping by tPl0ch · Pull Request #2286 · symfony/symfony-docs · GitHub
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[WaitingCodeMerge][Book][ServiceContainer] Added new 2.3 feature '@@' escaping #2286

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[WaitingCodeMerge][Book][ServiceContainer] Added new 2.3 feature '@@' escaping #2286

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6 changes: 6 additions & 0 deletions book/service_container.rst
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Expand Up @@ -231,6 +231,12 @@ looks up the value of each parameter and uses it in the service definition.

<argument type="string">http://symfony.com/?foo=%%s&bar=%%d</argument>

.. versionadded:: 2.3

Since version 2.3 it is possible to escape strings that start with an ``@`` for
parameters (i.e. a very safe mailer password) by using ``@@`` (similar to
the ``%%`` escaping strategy). This applies only to the YAML format.

The purpose of parameters is to feed information into services. Of course
there was nothing wrong with defining the service without using any parameters.
Parameters, however, have several advantages:
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