Checkout With Single Item

Hi

Can any one help me with this code, can't work it out how to get it to work. I want some of my items to be checkout by there self. The point of this code is that it will notify the they will have to remove any additional items of the basket before checking out.

Your post seems woefully incomplete. Suggest you us a keyboard and review it after you submit.

Use hooks in the fn_add_product_to_cart function to check if the product can be added to cart