Which php.ini file did you use?
If you used
php.ini-recommended
like I did, then global variables are disabled by default, so you'll have to use the new global array variables they have set.
php.ini-recommended gives a brief description of the new arrays, here is the paragraph at the top of the php.ini file.
; - register_globals = Off [Security, Performance]
; Global variables are no longer registered for input data (POST, GET, cookies,
; environment and other server variables). Instead of using $foo, you must use
; you can use $REQUEST["foo"] (includes any variable that arrives through the
; request, namely, POST, GET and cookie variables), or use one of the specific
; $GET["foo"], $POST["foo"], $COOKIE["foo"] or $_FILES["foo"], depending
; on where the input originates. Also, you can look at the
; import_request_variables() function.
; Note that register_globals is going to be depracated (i.e., turned off by
; default) in the next version of PHP, because it often leads to security bugs.
; Read http://php.net/manual/en/security.registerglobals.php for further
; information.
