global variables in php not working as expected

Question

I\'m having trouble with global variables in php. I have a $screen var set in one file, which requires another file that calls an initSession() def

Answer 1

Global DOES NOT make the variable global. I know it's tricky :-)

Global says that a local variable will be used as if it was a variable with a higher scope.

E.G :

Note that global vars are rarely a good idea. You can code 99.99999% of the time without them and your code is much easier to maintain if you don't have fuzzy scopes. Avoid global if you can.