<?php
foreach($post_vars as $pv)
{
   // svv: don't set var if it's not present (imprtand!)
   if(isset($_POST[$pv])){ $$pv=$_POST[$pv]; }
   else{
       if(isset($HTTP_POST_VARS[$pv])){ $$pv=$HTTP_POST_VARS[$pv]; }
   }
}
?>