(regex für src|regex für alt|regex für width| regex für height)(regex für src|regex für alt|regex für width| regex für height)(regex für src|regex für alt|regex für width| regex für height)(regex für src|regex für alt|regex für width| regex für height)

[img]/test.jpg[/img]

  $code = '
    [img]dingens[/img]
    

dingens</p>
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
    [img]dingens[/img]
  ';

  function dingens($params) {
    $wanted  = array('alt', 'height', 'src', 'width');
    $attribs = preg_split('#\s+#', $params[1], -1, PREG_SPLIT_NO_EMPTY);
    if (count($attribs) < 4)
      return 'kicked because of lack of ...';
    $attribs_only = preg_replace('#=".+"#', '', $attribs);
    if (count(array_unique($attribs)) != count($attribs))
      return 'kicked because of dupes ...';
    $rest = array_diff($attribs_only, $wanted);
    return $params[0];
  }

  $timer = &new noOtherTimer;

  echo $lines = preg_match_all('#<img.*/>#', preg_replace_callback('#<img(.*) />#Uis', 'dingens', $code), $result).' bilder entsprechen den anforderungen.
';
  echo '<textarea cols="100" rows="'.($lines * 1 + 8).'">'.print_r($result, TRUE).'</textarea>
';

  echo 'eine iteration ben&ouml;tigt '.$timer->getTimer().'ms';