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[Config] Add Kernel method override example for php/xml formats #16694

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Apr 8, 2022
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[Config] Add Kernel method override example for php/xml formats #16694

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21 changes: 20 additions & 1 deletion configuration.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,26 @@ shown in these three formats.
Starting from Symfony 5.1, 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.
and ``.php`` file extensions by overriding the
:method:`Symfony\\Component\\HttpKernel\\Kernel::configureContainer` method::

// src/Kernel.php
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;

private function configureContainer(ContainerConfigurator $container): void
{
$configDir = $this->getConfigDir();

$container->import($configDir.'/{packages}/*.{yaml,php}');
$container->import($configDir.'/{packages}/'.$this->environment.'/*.{yaml,php}');

if (is_file($configDir.'/services.yaml')) {
$container->import($configDir.'/services.yaml');
$container->import($configDir.'/{services}_'.$this->environment.'.yaml');
} else {
$container->import($configDir.'/{services}.php');
}
}

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