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.

Client

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

Cookies

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
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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.
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