Shopping Cart Framework

Question

I am tasked to build a shopping cart that sells book. I would like to seek help in putting me in the right direction as to where to go from here.

As of what I see, I

Answer 1

You have couple of options

1. Magento
2. Opencart

Both of them are built for e-commerce.

Magento is slow without any doubt, opencart is fast but not the best as Magento.

If your's application scope is limited, you can build the application in CI and i knows that it will be faster than both of these two.

But as programming perspective, its always better which is already build instead starting from scratch.