I have read so many different answers on this topic. The more i search more diverse it gets. I have a single require_once file with all my site functions but this has grown to 5000 lines. Is it time for me to break it up and is it performance efficient to do it this way? At the moment each page is obviously having to traverse multiple lines for which it will not use.
I have also heard about apc and memcache. Are there any significant issues with these options?
Hope someone can clarify.
Thanks