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Changing versionadded 5.1 to note #17520

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Jun 6, 2023
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Changing versionadded 5.1 to note #17520

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12 changes: 5 additions & 7 deletions configuration.rst
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Expand Up @@ -60,13 +60,11 @@ configure your applications. Symfony lets you choose between YAML, XML and PHP
and throughout the Symfony documentation, all configuration examples will be
shown in these three formats.

.. versionadded:: 5.1
.. note::

Starting from Symfony 5.1, by default Symfony only loads the configuration
By default, Symfony only loads the configuration
files defined in YAML format. If you define configuration in XML and/or PHP
formats, update the ``src/Kernel.php`` file to add support for the ``.xml``
and ``.php`` file extensions by overriding the
:method:`Symfony\\Component\\HttpKernel\\Kernel::configureContainer` method::
formats, update the ``src/Kernel.php`` file::

// src/Kernel.php
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
Expand All @@ -93,8 +91,8 @@ shown in these three formats.
}

There isn't any practical difference between formats. In fact, Symfony
transforms and caches all of them into PHP before running the application, so
there's not even any performance difference between them.
transforms all of them into PHP and caches them before running the application, so
there's not even any performance difference.

YAML is used by default when installing packages because it's concise and very
readable. These are the main advantages and disadvantages of each format:
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