Dynamic routing on silex

app.php

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

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

$app = new Silex\Application();

// Twig
$app->register(new Silex\Provider\TwigServiceProvider(), array(
    'twig.path'    => __DIR__.'/../templates',
    'twig.options' => array('cache'=>__DIR__.'/../templates_c'),
));

$pages = array(
    '/'    => 'index',
    '/blog'  => 'blog',
    '/about' => 'about',
);

foreach($pages as $route => $view) {
	$api->get($route, function(Silex\Application $app) use($view) {
		return $app['twig']->render($view.'.html');
	})->bind($view);
}

return $app;