Using a "heavy front controller" to manage dependencies - http://www.symfonycentral.com

front.php

<?php
require_once __DIR__.'/../vendor/.composer/autoload.php';
 
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing;
use Symfony\Component\HttpKernel;
use Symfony\Component\EventDispatcher\EventDispatcher;
 
$request = Request::createFromGlobals();
$routes = include __DIR__.'/../src/app.php';
 
$context = new Routing\RequestContext();
$matcher = new Routing\Matcher\UrlMatcher($routes, $context);
$resolver = new HttpKernel\Controller\ControllerResolver();
 
$dispatcher = new EventDispatcher();
$dispatcher->addSubscriber(new HttpKernel\EventListener\RouterListener($matcher));
 
$framework = new Simplex\Framework($dispatcher, $resolver);
 
$response = $framework->handle($request);
$response->send();