Design pattern php for ecommerce

I wanted to create, for educational purposes, php application for managing an e-commerce site. Obviously I will have to manage users, products, shopping carts and everything i need. I know PHP and I have already made a similar application but I did not follow any pattern in particular. I just created the classes to manage individually, brans, carts, database connection, lang manager, login manager and products. Now I want to perfect myself and remake an application with the same purpose but I would plan it and structure it better.

So I wanted to ask if someone could suggest a pattern that seems appropriate to my case that i can study.

Thanks in advance,

Luigi

P.S. Sorry for my english ;)