Sonderzeichen per Tag umcoden?

function sem_g023($rows) {
    header("Content-Type: application/rss+xml; charset=UTF-8");
    $mainconfig =& JFactory::getConfig();
    $config = &JComponentHelper::getParams('com_seminar');
    $sprache =& JFactory::getLanguage();
    $html = "\n<rss version=\"2.0\">";
    $html .= "\n<channel>";
    $html .= "\n<title>".$mainconfig->getValue('config.sitename')." - ".JTEXT::_('SEM_0083')."</title>";
    $html .= "\n<link>".JURI::ROOT()."index2.php?s=".sem_f036()."&option=".JRequest::getCmd('option')."&task=31</link>";
    $html .= "\n<description>Kurze Beschreibung des Feeds</description>";
    $html .= "\n<language>".$sprache->getTag()."</language>";
    $html .= "\n<copyright>".$mainconfig->getValue('config.fromname')."</copyright>";
    $html .= "\n<ttl>60</ttl>";
    $html .= "\n<pubDate>".date("r")."</pubDate>";
 
    foreach($rows AS $row) {
      $user = &JFactory::getuser($row->publisher);
      $cancelled = "";
      if($row->cancelled==1) {
        $cancelled = " - ".JTEXT::_('SEM_0103');
      }
      $html .= "\n<item>";
      $html .= "\n<title>".$row->title.$cancelled."</title>";
      $html .= "\n<description>".JTEXT::_('SEM_0009').": ".JHTML::_('date',$row->begin,$config->get('sem_p067',JTEXT::_('SEM_0167')),0)." - ".$row->shortdesc."</description>";
      $html .= "\n<link>".JURI::ROOT()."index.php?option=".JRequest::getCmd('option')."&task=3&cid=".$row->id."</link>";
      if($config->get('sem_p050',0)>0) {
        $html .= "\n<author>".$user->name.", ".$user->email."</author>";
      }
      $html .= "\n<guid>".sem_f002($row->id)."</guid>";
      $html .= "\n<category>".$row->category."</category>";
      $html .= "\n<pubDate>".date("r",strtotime($row->publishdate))."</pubDate>";
      $html .= "\n</item>";
    }
    $html .= "\n</channel>";
    $html .= "\n</rss>";
    echo $html;
    exit;
  }