dependant incremental variables

[blondegeek]

Hello!
I'm trying to write a PHP handling form for PayPal's IPN (instant payment notification). one of the variables that paypal throws at the handler is num_cart_items which tells you how many items were in the cart and numbers each item as item_name1, item_name2, ...

What I need to do is take the number of items in the cart:
[code]$num_cart_items = $_POST['num_cart_items'];[/code]

and whatever amount that is make that many of these:

[code]$item_name1 = $_POST['item_name1'];
$item_name2 = $_POST['item_name2'];[/code]

that I need for the number of items there were in the cart.

How in the world do I do that?

Thanks!