reg:shopping in php

[shahjahan]

Hi all
Iam a novice programmer in php.At present iam doing shopping in php.
I have a list of 10 products.When i select one product that must be added to cart.

The problem is:

What the cart must be made off?session or cookie or store the cart itself in the database table.Which one is feasible?
In any of these cases pls.,provide me the source code.Your help will be very valuable to me.

Thanks,
shahjahan