How can Cloudflare affect the functionality of PHP scripts and cause errors in forum posts?

Cloudflare can affect the functionality of PHP scripts by caching responses and potentially serving stale content. This can cause errors in forum posts if users are not seeing the most up-to-date information. To solve this issue, you can add cache control headers to your PHP scripts to instruct Cloudflare not to cache certain responses.

header("Cache-Control: no-cache, must-revalidate"); 
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");