<?php
foreach($get_vars as $gv)
{
   // svv: don't set var if it's not present (imprtand!)
   if(isset($_GET[$gv])){ $$gv=$_GET[$gv]; }
   else{
     if(isset($HTTP_GET_VARS[$gv])){ $$gv=$HTTP_GET_VARS[$gv]; }
   }

}
?>