Symfony2 - Include template inside another template

gistfile1.txt

Twig:
{# src/Acme/ArticleBundle/Resources/Article/list.html.twig #}
{% extends 'AcmeArticleBundle::layout.html.twig' %}

{% block body %}
    <h1>Recent Articles<h1>

    {% for article in articles %}
        {% include 'AcmeArticleBundle:Article:articleDetails.html.twig' with {'article': article} %}
    {% endfor %}
{% endblock %}

PHP:
<!-- src/Acme/ArticleBundle/Resources/Article/list.html.php -->
<?php $view->extend('AcmeArticleBundle::layout.html.php') ?>

<?php $view['slots']->start('body') ?>
    <h1>Recent Articles</h1>

    <?php foreach ($articles as $article): ?>
        <?php echo $view->render('AcmeArticleBundle:Article:articleDetails.html.php', array('article' => $article)) ?>
    <?php endforeach; ?>
<?php $view['slots']->stop() ?>