URI.SafeIframeRegexp

TYPE: string/null

VERSION: 4.4.0

DEFAULT: NULL

--DESCRIPTION--

<p>

    A PCRE regular expression that will be matched against an iframe URI.  This is

    a relatively inflexible scheme, but works well enough for the most common

    use-case of iframes: embedded video.  This directive only has an effect if

    %HTML.SafeIframe is enabled.  Here are some example values:

</p>

<ul>

    <li><code>%^http://www.youtube.com/embed/%</code> - Allow YouTube videos</li>

    <li><code>%^http://player.vimeo.com/video/%</code> - Allow Vimeo videos</li>

    <li><code>%^http://(www.youtube.com/embed/|player.vimeo.com/video/)%</code> - Allow both</li>

</ul>

<p>

    Note that this directive does not give you enough granularity to, say, disable

    all <code>autoplay</code> videos.  Pipe up on the HTML Purifier forums if this

    is a capability you want.

</p>

--# vim: et sw=4 sts=4

