What different settings affect PHP and/or Apache timeouts?

Question

I was asked to help troubleshoot someone's website. It is written in php, on a linux box, using an apache server and mysql, and I have never worked with any of these before (except maybe linux in school).

I got most of the issues fixed (most code is really the same no matter what langues it is) however there is still one page that is timing out when processing huge files. I'm fairly sure the problem is a timeout somewhere but I have no idea where all the php timeouts would be.

I have adjusted max_execution_time, max_input_time, mysql.connect_timeout, default_socket_timeout, and realpath_cache_ttl in php.ini but it is still timing out after about 10 minutes. What other settings might exist that I could increase to try and fix this?

As a sidenote, I'm aware that 10min is generally not desired when processing an file, however this section of the site is only used by one person once or twice a week and she doesn't mind providing the process finishes as expected !and I really don't want to go rewrite someone else's bad coding in a language I don't understand, for a process I don't understand)

EDIT: The sql process finishes in the background, its just the webpage itself that times out.

Answer 1

Per Frank Farmer's suggestion, I added flush() to the code and it works now. Definitely a browser timeout, thanks Frank!