Lesson 27 - E-shop in PHP - Shopping cart

PHP E-shop E-shop in PHP - Shopping cart

In the previous lesson, E-shop in PHP - Test data, we added 100 test products to our e-shop. The next couple of tutorials will be about creating orders, i.e. adding goods to a cart and passing them through the checkout.

Shopping cart

Users add products to a cart, then, when they're done, they proceed to checkout and finish the order. This functionality is done in different ways in different e-shops, either on server-side or client-side. Let's introduce all of the possible approaches, their advantages, drawbacks, and then decide which one to use.


We could store data into cookies or a local storage on the client-side.


Cookies represent the mechanism designed to keep a website's informational state.

Advantages to using cookies:

  • They're widely supported by browsers
  • They're persistent (they don't expire unless we tell them to)

Disadvantages to using cookies:

  • Limited to 4096 bytes
  • Data is sent to a server on every request, which isn't really a disadvantage. However, in our case, it doesn't make much sense to set things up this way.
Local storage


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In this tutorial, we'll discuss the different approaches of implementing shopping carts in e-shops, choose the best one, and create a table for orders.

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Article has been written for you by David Capka
The author is a programmer, who likes web technologies and being the lead/chief article writer at ICT.social. He shares his knowledge with the community and is always looking to improve. He believes that anyone can do what they set their mind to.
Unicorn College The author learned IT at the Unicorn College - a prestigious college providing education on IT and economics.
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