public static function updateclass($cls_id, $classdate, $classtime, $spots, $note) { global $database; $cls_id = $database->escape_value($cls_id); $classdate = $database->escape_value($classdate); $classtime = $database->escape_value($classtime); $spots = $database->escape_value($spots); $note = $database->escape_value($note); $timestmp = DateManager::convertdateandtime2tmstp($classdate, $classtime); $insert_query = "UPDATE classes SET `date` = '" . $timestmp . "', `spots` = '" . $spots . "', `note` = '" . $note . "' WHERE `classes`.`id` ='" . $cls_id . "'"; return $database->query($insert_query); }