session_start() breaking headers?

I am running pages on cloudflare and attempting to fully cache php pages that have this script running, however, every-time I check the headers they are reset to Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache which is preventing the pages from caching. Could the session_start(); call in is rosbj.php be resetting my headers? Do I need to add session_cache_limiter('public') someplace to correct this? All other pages without this script running are caching fine so it is something with this script. Thanks.

If you want the page fully cached, what are you using the session for? If you are displaying content based on the session, then you wouldn't want the page cached or the information wouldn't be updated properly.

The session is from your mysqli code when it is run on my page. If I have a a dynamic page where a URL variable is changing the content of the page it is beneficial from a resource stand point to cache that content. So if test.php?id=1 is different from test.php?id=2 why not cahce on my CDN? Which is what I am trying to do, but it appears the MYSQLi server behavior is overriding my server headers. Since I did not write the code for this extension, basically I am asking how do I edit it to stop it from breaking my headers and preserve the integrity of the code I purchased?

You can remove the session start line to see if that is what is causing the problem. It shouldn't effect the page otherwise if you aren't using session variables. Give it a try.