trying to compare 2 arrays and based on that increment the qty in the shopping cart or add a new product.

the first one is sc_pid which is equal to the productid querystring

the second one is sc_pdid = to productdetailsid if the product has attributes as color, size, etc.

It adds to the cart (based on session array), but i can not get it to incremetn the qty once is already in the cart.

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