You can do this either by adding hidden fields to your HTML page that are then passed along to the next page that will be called via a form submit from the client (i.e. browser). You can also use session to achieve the same:
PHP Manual: Sessions[
^]. Please also read the documentation on the functions to be used with sessions:
Session Functions[
^].
The best point to start though would seem to be this if you have never used sessions before or don't even know what a session is:
Introduction to Sessions[
^]
[Edit]
Another way to pass data along to the next page is URL rewriting on the client side.
[/Edit]
Regards,
Manfred