How to prevent caching using php

We cannot clear the browser cache from the PHP side. For this reason, you may want to prevent browser caching from all aspects from the beginning. This article will introduce to you how to use PHP to prevent caching. .

Finally, I'll tell you how to do it.

The implementation method is to write the following code into the PHP file.

<?php
header("Cache-Control:no-cache,no-store,must-revalidate,max-age=0");
header("Cache-Control:pre-check=0",post-check=0,false);
header("Pragma:no-cache");

This means that we will not cache the command header information as a whole.

Let’s briefly explain the code

no-store: Do not cache responses or requests

no-cache: Disable reuse without confirmation on the server side

max-age: Because of the cache expiration age (in seconds), 0 means there is no valid time

When checking on the Internet, the following description also appears, but some browsers report Events that will be cached.

header("Cache-Control: no-cache");
header("Pragma: no-cache");

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