routing php framework

composer.json

{
  "require": {
      "symfony/routing": "2.1.*",
      "symfony/http-foundation": "2.1.*",
      "symfony/config": "2.1.*",
      "symfony/yaml": "2.1.*",
      "pimple/pimple": "dev-master"
  }
}

hello.php

<?php
echo "hello " . h($name);
echo "<pre>";
print_r($request->query->get('b', 'sss'));

index.php

<?php
ini_set('display_errors', 1);
error_reporting(-1);

require __DIR__ . '/vendor/composer/autoload.php';

use Symfony\Component\Routing\Matcher\UrlMatcher;
use Symfony\Component\Routing\RequestContext;
use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\HttpFoundation\Request;

$context = new RequestContext($_SERVER['REQUEST_URI']);

$matcher_file = __DIR__ . '/cache/ProjectUrlMatcher.php';

if (file_exists($matcher_file)) {
    require $matcher_file;
    $router = new ProjectUrlMatcher($context);
} else {
    $locator = new Symfony\Component\Config\FileLocator(array(__DIR__));
    $router = new Symfony\Component\Routing\Router(
        new Symfony\Component\Routing\Loader\YamlFileLoader($locator),
        "routing.yaml",
        array('cache_dir' => __DIR__.'/cache'),
        $context
    );
}
$request = Request::createFromGlobals();

try{
    extract($router->match($request->getPathInfo()), EXTR_SKIP);
    require_once __DIR__ . '/' .$controller . ".php";
} catch (Symfony\Component\Routing\Exception\ResourceNotFoundException $e) {
    echo $e;
}

function h($v) {
  return htmlspecialchars($v, ENT_QUOTES, mb_internal_encoding());
}

routing.yaml

route1:
    pattern: /foo
    defaults: { controller: 'foo' }

route2:
    pattern: /foo/bar
    defaults: { controller: 'foobar' }

route3:
    pattern: /hello/{name}
    defaults: { controller: 'hello' }