Question

I have such problem:

Site was totaly redesigned and everything works fine on my different devices (and even in different browsers). But some users (more than 3) can’t load main page of the site (page is keep loading and users just see white page) – it’s just stucks.

I think problem is somewhere around caching. Question is: how to tell browser that page was updated and it shouldn’t load it from cache?

P.S. If URL is required – I’ll post it here, but I’m not sure that it’s legal

Answer 1

<?php
header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past
?>

From http://php.net/manual/en/function.header.php

Make sure this is before any data is sent to the browser.