Will including unnecessary php files slow down website?

Question

The question might prompt some people to say a definitive YES or NO almost immediately, but please read on...

I have a simple website where there are 30 php pages (e

Answer 1

I live by "include as little as possible, as much as necessary" so i usually just include my config and session handling for everything and then each page includes just what they need using an include path defined in the config include, so for path changes you still just need to change one file.

If you include everything the slowdown won't be noticeable until you get a lot of page hits (several hits per second) so in your case just including everything might be ok.