Basic PHP Assessment

Cart Challenge / cart.php

Step 1)

Implement getProductById() We don't have a database, so we'll pretend that this method does a database lookup by product id, and returns the product row. It should:

• take in a product id, NOT a numerical index of the products array
• return the entire product, which contains id, title and price.
• be used in Cart::addProduct()

Step 2)

Build Cart class Cart extends CartInterface. The CartInterface interface contains method-specific instructions.

Step 3)

Test by adding and removing multiple items to cart, experimenting with different quantities.
An example of this is commented out in index.php