public static function dropCarrier($carrierIds) { self::initDB(); $sql = "UPDATE " . self::$table . " SET is_delete = 1 WHERE id in({$carrierIds})"; $query = self::$dbConn->query($sql); if ($query) { return true; } else { self::$errCode = "003"; self::$errMsg = "关闭运输方式失败"; return false; } }