How to prevent browser caching of assets called from PHP pages?

Question

Whenever I update CSS, JS, or image files the browser is loading the same old files stored in cache. How can I prevent this? I am serving my site pages with PHP.

Answer 1

try this

<?php

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