Problem s cestinou a modulem Invitation

<?        

include_once(PUN_ROOT . "include/invitation_db.php");
if(isset($_GET['action']) && $_GET['action'] == "makeInvitations")  {
    $form = extract_elements(array('anzahl'));
   if($pun_user['g_id'] == PUN_ADMIN)  { 
  //   echo $form['anzahl']. " neue Einladungen! fuer den User ".$id ."<br/>";
  //   echo "aber Du bist ".$pun_user['id'];
     for($i = 0;$i < $form['anzahl'];$i++)  {
       insertInvitation($id);
       usleep(100);
       }
     }
  redirect('profile.php?section='.$section.'&amp;id='.$id, $lang_profile['Profile redirect']);
  }

if(isset($_GET['action']) && $_GET['action'] == "sendInvitation")  {
   $code = getLastInvitation($id);
    $form = extract_elements(array('req_recipient','invitation_text'));
    // A user who is NOT admin wants to send 
    // an invitation in somebody ele's name?? No way!
   if($pun_user['g_id'] != PUN_ADMIN and $pun_user['id'] != $id)  {
     error($lang_invitation['No Permission'], __FILE__, __LINE__);
     }
   else  { 
  //   echo $form['anzahl']. " neue Einladungen! fuer den User ".$id ."<br/>";
  //   echo "aber Du bist ".$pun_user['id'];
     $pp = split("/",$_SERVER['SCRIPT_NAME']);
     array_pop($pp);
     $act_link = "http://".$_SERVER['HTTP_HOST'].implode("/",$pp)."/register.php?invite=".$code;
     $mtext = $form['invitation_text'] . "\n".$lang_invitation['Forum Link']."<a href='".$act_link."'>".$act_link."</a>";
     $header = "Content-type: text/plain; charset=windows-1250";
     mail($form['req_recipient'], $lang_invitation['Mail Subject Invitation'],$mtext,"From:".$pun_user['email']);
     //echo $mtext;
     updateInvitation($id,$code,$form['req_recipient'], $mtext);
     redirect('profile.php?section='.$section.'&amp;id='.$id, $lang_invitation['Invitation redirect']);
     }
  }
  
?>