为什么getcwd()在__destruct()中返回/? [英] Why does getcwd() returns / in __destruct()?

问题描述

我刚刚注意到，如果在__destruct()魔术函数中调用getcwd()则返回"/"，而在其他任何方法中，它均返回预期的路径.

I have just noticed that getcwd() return "/" if called within __destruct() magic function, while in any other method it returns the expected path.

您对此有解释吗?

推荐答案

这是SAPI的行为

在脚本关闭期间调用的析构函数已经发送了HTTP标头.在脚本关闭阶段，某些SAPI(例如Apache)的工作目录可能会有所不同."

"Destructors called during the script shutdown have HTTP headers already sent. The working directory in the script shutdown phase can be different with some SAPIs (e.g. Apache)."

来自 http://php.net/manual/en/language.oop5 .decon.php

但是，正如其他答案中提到的那样，有很多方法可以获取当前的相对路径.如果您在运行时更改了它，请确保注意该对象内部的某个地方.

But as mentioned in other answers there are plenty ways to get the current relative path. If you changed it during runtime make sure to note somewhere inside the object.

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