app.php

<?php

use Symfony\Component\ClassLoader\ApcClassLoader;
use Symfony\Component\HttpFoundation\Request;

$loader = require_once __DIR__ . '/../app/bootstrap.php.cache';

if(!isset($_SERVER['APPLICATION_ENV'])) {
    $_SERVER['APPLICATION_ENV'] = (in_array(@$_SERVER['REMOTE_ADDR'], array('127.0.0.1', 'fe80::1', '::1'))) ? 'dev' : 'prod';
}

if ($_SERVER['APPLICATION_ENV'] == 'dev') {
    Symfony\Component\Debug\Debug::enable();
}

// Use APC for autoloading to improve performance.
// Change 'sf2' to a unique prefix in order to prevent cache key conflicts
// with other applications also using APC.
if ($_SERVER['APPLICATION_ENV'] == 'prod' && isset($_SERVER['APPLICATION_APC_PREFIX'])) {
    $loader = new ApcClassLoader($_SERVER['APPLICATION_APC_PREFIX'], $loader);
    $loader->register(true);
}

require_once __DIR__ . '/../app/AppKernel.php';

$kernel = new AppKernel($_SERVER['APPLICATION_ENV'], $_SERVER['APPLICATION_ENV'] == 'dev');
$kernel->loadClassCache();

//if($_SERVER['APPLICATION_ENV'] == 'prod') {
//    require_once __DIR__.'/../app/AppCache.php';
//    $kernel = new AppCache($kernel);
//}

Request::enableHttpMethodParameterOverride();
$request = Request::createFromGlobals();

$response = $kernel->handle($request);
$response->send();

$kernel->terminate($request, $response);