public static function saveAccoutPower($set, $where)
 {
     $table = self::$table;
     self::initDB();
     $sql = " select id from {$table} where {$where} ";
     $query = self::$dbConn->query($sql);
     if ($query) {
         $res = self::$dbConn->fetch_array_all($query);
         if (count($res) > 0) {
             $update = "update {$table} {$set} where {$where}";
             $query = self::$dbConn->query($update);
             if (!$query) {
                 self::$errCode = "002";
                 self::$errMsg = "sql error";
                 return false;
             }
         } else {
             $set .= ",{$where} ";
             $insert = "insert into {$table} {$set}";
             $query = self::$dbConn->query($insert);
             if (!$query) {
                 self::$errCode = "002";
                 self::$errMsg = "sql error";
                 return false;
             }
         }
         self::$errCode = "200";
         self::$errMsg = "success";
         return true;
     } else {
         self::$errCode = "002";
         self::$errMsg = "sql error";
         return false;
     }
 }