1  URI.SafeIframeRegexp
 2  TYPE: string/null
 3  VERSION: 4.4.0
 4  DEFAULT: NULL
 5  --DESCRIPTION--
 6  <p>
 7      A PCRE regular expression that will be matched against an iframe URI.  This is
 8      a relatively inflexible scheme, but works well enough for the most common
 9      use-case of iframes: embedded video.  This directive only has an effect if
10      %HTML.SafeIframe is enabled.  Here are some example values:
11  </p>
12  <ul>
13      <li><code>%^http://www.youtube.com/embed/%</code> - Allow YouTube videos</li>
14      <li><code>%^http://player.vimeo.com/video/%</code> - Allow Vimeo videos</li>
15      <li><code>%^http://(www.youtube.com/embed/|player.vimeo.com/video/)%</code> - Allow both</li>
16  </ul>
17  <p>
18      Note that this directive does not give you enough granularity to, say, disable
19      all <code>autoplay</code> videos.  Pipe up on the HTML Purifier forums if this
20      is a capability you want.
21  </p>
22  --# vim: et sw=4 sts=4