index.php

<?php

require_once __DIR__.'/silex.phar'; 

$app = new Silex\Application(); 

$app->register(new Silex\Provider\TwigServiceProvider(), array(
  'twig.path'       => __DIR__.'/views',
  'twig.class_path' => 'phar://'.__DIR__.'/twig.phar/lib',
));

$app->post('/', function() use($app) { 
  return $app['twig']->render('hello.twig', array(
    'name' => 'World'
  ));
}); 

$app->run();