public static function getPositonIndexList($select, $where) { self::initDB(); $sql = "select {$select} from `wh_position_index` {$where} "; $query = self::$dbConn->query($sql); if ($query) { $ret = self::$dbConn->fetch_array_all($query); return $ret; //成功, 返回列表数据 } else { self::$errCode = "003"; self::$errMsg = "error"; return false; } }