'message', 'usertag' => 'user', 'message' => 'messagetag', 'user' => 'usertag'); foreach($post_vars as $key => $value) { $$key = strip_tags($value); } if($user == '') { } elseif($message == '') { } else { // header call goes here, but NONE - no output before the header call can be sent. } ?>