twig.php

<?php

$app->register(new Silex\Provider\TwigServiceProvider(), array(
    'twig.path'       => __DIR__.'/views',
    'twig.options'    => array(
        'cache'            => __DIR__.'/../data/cache/twig',   
        'auto_reload'      => true,
        'strict_variables' => false,
    ),
));