public static function getLibraryStatusGroupNum($where = '') { self::initDB(); $sql = "select * from wh_storage_status_group where is_delete=0 {$where}"; $query = self::$dbConn->query($sql); if ($query) { $ret = self::$dbConn->num_rows($query); return $ret; } else { self::$errCode = "003"; self::$errMsg = "error"; return false; } }