Using the Symfony 2 HTTP Foundation component - http://www.symfonycentral.com

http-example.php

<?php 
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

/* Using the HTTP Foundation class */
$request = Request::createFromGlobals();
$input = $request->get('name', 'World');
$response = new Response('Hello ' . $input);
$response->send();

/* ... instead of this: */
$input = !empty($_GET['name']) ? $_GET['name'] : 'World';
echo 'Hello ' . $input;