public $Category; public $ProductCode;当将该类的对象传递到数据访问层时,我需要将传递给产品类类型的对象转换为该函数中的属性由于PHP中的类型转换只适用于基本类型,那么传递对象的强制转换的最佳解决方案是什么?final class productDAL public function GetItem($id) $m
演示如下:mysql> select * from letter_data where id in (select data_id from letter_index where target# query result78 rows in set (52.01 sec)mysql> select data_id from letter_index where target# query result78 rows in set (0.25
我不知道这条insert语句做错了什么。我得到的错误是:mysql.connector.errors.ProgrammingError: Failedprocessing format-parameters;
'MySQLConverter' object has no attribute '_navigablestring_to_mysql'`= ("INSERT I