Symfony2在php模板中关闭autoescaping

There is way to turn autoescaping off in twig template in Symfony2. Like so:

{% autoescape false %}
{{ child.vars.label }}
{% endautoescape %}

How can I do something like this in PHP template? I got expanded choice type in my form, and I need to use images as labels. But Symfony keeps escaping my img tags.

Edit: Sorry for misunderstood, but php templates have no autoescaping. If you want escaping in php templates you must do:

<?php echo $view->escape($var) ?>

Original answer: In Twig use raw filter - http://twig.sensiolabs.org/doc/filters/raw.html

{{ child.vars.label | raw }}