Twig (template engine)

Twig is a template engine for the PHP programming language. Its syntax originates from Jinja and Django templates.^[3] It's an open source product^[4] licensed under a BSD License and maintained by Fabien Potencier. The initial version was created by Armin Ronacher. Symfony2 PHP framework comes with a bundled support for Twig as its default template engine.^[5]

Example

The example below demonstrates some basic features of Twig.

{% extends "base.html" %}
{% block navigation %}
    <ul id="navigation">
    {% for item in navigation %}
        <li>
            <a href="{{ item.href }}">
                {% if item.level == 2 %}&nbsp;&nbsp;{% endif %}
                {{ item.caption|upper }}
            </a>
        </li>
    {% endfor %}
    </ul>
{% endblock navigation %}

Twig defines three kinds of delimiters:

• {% ... %}, which is used to execute statements, such as for-loops.
• {{ ... }}, which is used to print the content of variables or the result of evaluating an expression.
• {# ... #}, which is used to add comments in the templates. These comments aren't included in the rendered page.

Features

• complex control flow
• automatic escaping
• template inheritance
• variable filters
• i18n support (gettext)
• macros
• fully extendable^[3][6]

See also

• Smarty
• Twital, a template engine that compile its sources into Twig templates, adding some features as context-aware escaping, attribute-expression and creating more readable templates.

References

External links

• Twig official website
• Potencier, Fabien (October 7, 2009). "Templating Engines in PHP". Retrieved 6 April 2011. 
• Potencier, Fabien (November 20, 2009). "Templating Engines in PHP (Перевод: Шаблонизаторы в PHP)" (in Russian). Retrieved 6 April 2011.