Global vs static variables in PHP

Question

I\'m creating a basic framework in PHP. I need to pass data for the current page into different functions, allow them to modify and save it, and then pass it back to the pag

Answer 1

There really is no difference between a global variable and a public static variable. The class variable is namespaced a tiny bit better, but that hardly makes any difference. Both are accessible anywhere at any time and both are global state.

As it happens, I just wrote an exhaustive article on the subject:
How Not To Kill Your Testability Using Statics