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        如何确保 PDO 的 lastInsertId() 不是另一个同时插入

        时间:2023-09-20

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                • 本文介绍了如何确保 PDO 的 lastInsertId() 不是另一个同时插入的?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

                  问题描述

                  我正在使用 PDO 做一个带有 INSERT SQL 查询的注册表单.在此 INSERT 之后,我想提取刚刚创建的 userid(自动递增,主键),并将其 INSERT 提取到另一个表(确认代码"表)中

                  I am doing a signup form with an INSERT SQL query using PDO. After this INSERT, I want to extract the userid (auto incrementing, primary key) that was just created, and INSERT it into another table (a "confirmation code" table)

                  但我如何确保此用户 ID 不是第二个用户的用户 ID,该用户 ID 比第一个用户晚 1/1000 秒注册?

                  But how can I make sure that this userid is not that of a second user who registered 1/1000th of a second later that the first user?

                  我应该找到某种方法来锁定桌子吗?我应该使用事务吗?

                  Should I find some way of locking the table? Should I use transactions?

                  推荐答案

                  lastInsertId() 返回在该连接上插入的最后一行的标识符,因此并发用户(与数据库的不同连接)不会干扰.

                  lastInsertId() returns the identifier of the last row inserted on that connection, so concurrent users (with different connections to the database) will not interfere.

                  这篇关于如何确保 PDO 的 lastInsertId() 不是另一个同时插入的?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持html5模板网!

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