Amer Kawar

<?php

/**
 * Function to fix video objects embedding HTML code in Wordpress.
 * This function uses DOM traversal to rebuild the <object> tag of the
 * video files in an XHTML valid format.
 *
 * Article: HOW TO: Build a XHTML Valid Wordpress Blog with DISQUS Plugin
 * URL: http://blog.thoughtpick.com/2009/10/how-to-build-xhtml-valid-wordpress.html
 *
 * @author: Amer Kawar
 */
function fixVideoObjects($content) {

  // input the regex pattern to match <object *</object> tags
  $pattern = '/<object [a-z0-9\/\- \.=_#:,"\?\'><&;]*<\/object>/i';

  // use preg_match_all to fill $m array with all <object> fields found
  $m = array();
  preg_match_all($pattern, $content, $m);

  // for each match in $m loop and replace the object only if
  // it has the embed tag
  if ( isset($m[0]) && count($m[0]) > 0 ) {
    for ($i = 0 ; $i < count($m[0]); $i++) {
      if (isset($m[0][$i])) {
        $doc = new DOMDocument();
        $doc->loadHTML($m[0][$i]);
        $o = $doc->getElementsByTagName('object');

        if ( !is_null($o->item(0)) ) {
          $embed_tag = $o->item(0)->getElementsByTagName('embed');
          if (!is_null($embed_tag->item(0))) {
            $src = $embed_tag->item(0)->getAttribute('src');

            // get the w x h, if they are null from the <object> tag, get them from
            // the <embed> tag
            $w = $o->item(0)->getAttribute('width');
            $h = $o->item(0)->getAttribute('height');
            if (is_null($w)) $w = $embed_tag->item(0)->getAttribute('width');
            if (is_null($h)) $h = $embed_tag->item(0)->getAttribute('height');

            $out = '<object type="application/x-shockwave-flash" '
                   .'style="width:'.$w.'px; '
                   .'height:'.$h.'px;" data="'.str_replace('&','&amp;',$src).'">';

            // find all param tags and re-echo them in XHTML 1.0 format
            $params = $o->item(0)->getElementsByTagName('param');
            foreach ($params as $p) {
              if (!is_null($p->getAttribute('name')) && !is_null($p->getAttribute('value'))) {
                $n = $p->getAttribute('name');
                $v = $p->getAttribute('value');
                $out .= '<param name="'.$n.'" value="'.str_replace('&','&amp;',$v).'" />';
              }
            }

            $out .= '</object>';

            // replace object found by the re-written object
            $content = str_replace($m[0][$i], $out, $content);
          }
        }
      }
    }
  }

  return $content;
}

?>