код:
$baks=$num*50;
mysql_query("UPDATE `fman_clubs` SET `budj`=`budj`+'$baks',`balans`=`balans`-'$num' WHERE `id`='".$user_id."'"); $baks=$num*50;
mysql_query("UPDATE `fman_clubs` SET `budj`=`budj`+'$baks',`balans`=`balans`-'$num' WHERE `id`='".$user_id."'");