preg_replace('~[^a-z0-9_]~i','-',$V);}function
hidden_fields($pd,$ic=array()){while(list($x,$V)=each($pd)){if(!in_array($x,$ic)){if(is_array($V)){foreach($V
as$w=>$U)$pd[$x."[$w]"]=$U;}else
echo'<input type="hidden" name="'.h($x).'" value="'.h($V).'">';}}}function