Symfony Dependency Injection. Simple ClosureLoader usage.

config.php

<?php

namespace Symfony\Component\DependencyInjection\Loader
{
	$resource = function ($container) {
		$config = new namespace\AppBundle\DI\ClosureConfig();
		$config($container);
	};

	$loader->resolve($resource, null)->load($resource, null);
}

namespace Symfony\Component\DependencyInjection\Loader\AppBundle\DI
{
	class ClosureConfig
	{
		public function __invoke($container)
		{
			$container->setParameter("app.config.closure", "value");
		}
	}
}

config.yml

imports:
    - { resource: config.php }