在PHP中删除标题 [英] Delete a header in PHP

问题描述

为了允许缓存一个PHP生成的文件，我想确保'Pragma：no-cache'头部是 not 设置的。但是，如何删除可能已经设置的头文件？

To allow caching a PHP generated file, I want to make sure, that the 'Pragma: no-cache' header is not set. However, how do I delete a possibly already set header?

也就是说，它可能是可能的， code> header（'Pragma：no-cache'）; 现在我想确定，头文件没有发送。

That is, it could be possible, that somewhere in the code someone wrote header('Pragma: no-cache'); and now I want to make sure, the header is not sent.

这样做是否足够：

Is it sufficient to do this:

header('Pragma:');

或者像 delete_header（） （这显然是无证或隐藏的）？

or is there something like delete_header() (which would, apparently, be undocumented or well-hidden)?

推荐答案

header_remove（），因为php 5.3

header_remove() since php 5.3

header_register_callback（）也即将推出

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