什么时候在PHP中使用析构函数? [英] when to use destructor in php?

问题描述

析构函数的主要目的是什么?

what is the main purpose of a destructor?

您能提供一些有关删除对象时我想运行的示例吗?

could you give any examples of what i might want to run when a object is deleted?

推荐答案

它使对象有机会准备被杀死.这可能意味着手动清理，状态持久性等.

It gives the object an opportunity to prepare to be killed. This could mean manual cleanup, state persistence, etc.

例如，模型可能希望将其所有当前属性保存回数据库中.

For example, a Model may want to save all of its current properties back into the database.

或者，数据库对象本身可能想要关闭用于与数据库服务器通信的套接字.

Or, a Database object itself might want to close the socket it is using to communicate to a database server.

这篇关于什么时候在PHP中使用析构函数?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IT屋！