Potential Symfony MicroKernel example

index.php

<?php

require_once __DIR__.'/../vendor/autoload.php';

use Symfony\Component\Config\Loader\LoaderInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\MicroKernel;
use Symfony\Component\Routing\RouteCollectionBuilder;

class AppKernel extends MicroKernel
{
    public function home()
    {
        return new Response('Foo');
    }

    public function registerBundles()
    {
        return array(
            new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
        );
    }

    protected function configureRoutes(RouteCollectionBuilder $routes)
    {
        $routes->add('/', 'kernel:home');
    }

    protected function configureServices(ContainerBuilder $c, LoaderInterface $loader)
    {
        $c->setParameter('kernel.secret', 'foo');
    }
}

$kernel = new AppKernel('dev', true);
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);