container10.php

<?php

require_once __DIR__ . '/../includes/classes.php';
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Reference;
$container = new ContainerBuilder();
$container
  ->register('foo', 'FooClass')
  ->addArgument(new Reference('bar'));
return $container;