The last time you asked this question, I pointed out that you are storing the cart entries into a hashref called $cart_ref that is indexed by product_id, and because of this you can never have more than one item of any one product_id in the cart. You are still doing this, and thus you still cannot have more than one of any one product_id in the cart.

In reply to Re: Duplicate items in cart do not appear by jasonk
in thread Duplicate items in cart do not appear by b310

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