ornek.php

<?php

// src/Acme/HelloBundle/DependencyInjection/AcmeHelloExtension.php
namespace Acme\HelloBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Extension\Extension;

class AcmeHelloExtension extends Extension
{
    public function load(array $configs, ContainerBuilder $container)
    {
        // ... you'll load the files here later
    }
}