Re: Newbie question about variable scope in Apache 2.0 & PHP

on 08/05/03 4:17 AM, Steve Henderson (steve@futurephase.com) wrote: > One other question: Is there a reason to prefer one method over another > from an efficiency standpoint? The odl way (register globals on) took the get (+ post, session & other) variables and made them into short variables like $id. The problem was that you'd have no way of knowing if the variable came from get, post, session, etc etc, since they all overwrote each other in an order specified in php.ini. So, in theory, you could be "relying" on a variable like $validLoggedInUser to exist as a session variable, but I might overwrite or bypass that via a GET variable or something else, and you'd have no way of knowing, unless you initialised your variables in the script. So, now you *know* that $_SESSION['isValidUser'] is definitely a session variable, and $_GET['id'] is definitely a variable from the URL. At first, I did something like... <? $id = $_GET['id']; ?> ... at the top of my script, but now I just work with $_GET['id'] directly. Justin French