What is the scope of require_once in PHP?

Question

Simple question: Is the scope of require_once global?

For example:

Answer 1

To more specifically answer your question, the second time you call require_once on that file, it won't do anything, because it's already be included.

If your include has functions etc. in it, then you would have issues including it inside a function anyway, so scope is irrelevant. If it's just variables being defined or processed, then you can just use require instead of require_once if you want it to be included again, thereby redefining the variables in your scope.