The function and example usage of header () in php

This article introduces the relevant knowledge of "the function and example usage of header () in php". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Use header () to set the expiration time.

2. Use header () to set the last update date of the page to the same day, which can force the browser to get the latest information.

3. Use header () to tell the client browser not to use caching.

Example

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