Question

I recently encountered a problem in my website – some users do not have new version of the webpage displayed when it’s updated. Although refreshing several times helps the problem, I don’t want to add information on my site how to clear cache. Therefore I ask – how to change my .htaccess to make single page (single html document, but only this one – it’s simple enough to not overload traffic) send new version every time. I searched, but most of the problem solutions are “How to clear browser cache”.

Answer 1

I see you are using PHP, you can do it from PHP like this:

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");    // set the expire date in the past
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-cache, must-revalidate");  // HTTP/1.1
header("Pragma: no-cache");                          // HTTP/1.0

Be sure to not send anything before the header (no echo, print etc …).