PHP functions

What is a function?

What is a function?







Calling a function in another function.

Calling a function in another function.








By 'reference' vs by 'value'.

By 'reference' vs by 'value'.








Return data from a function.

Return data from a function.








Function scope: Local, function, superglobals

Function scope: Local, function, superglobals








part2

part3