Implementation principle of php shopping cart

If you understand how the shopping cart of a large website is made, the following can provide you with a simple idea:

When a user is shopping, he may be Members or visitors (non-members) of this e-commerce; therefore, two options are available:

Recommended tutorial: PHP video tutorial

Option 1: (Member)

When the user makes a purchase, he is a member of our store (the user's data exists in the database), When users add items to the shopping cart, we can divide them into two methods;

Method 1

When the user purchases items and adds them to the shopping cart without logging in, If we use session to save user data, then we must consider this situation. Once the user closes the browser, the previously saved data will be lost, so cookies are used to save the data. When the user clicks to check out, the user is logged in and verified, and then it is determined whether the cookie contains information about the purchased product. If it exists, save the data in the cookie to mysql, then clear the cookie information, and finally checkout is successful.

Method 2

Users must perform login verification when adding products to the shopping cart, and then the purchased products can be saved directly in the database, but have you ever thought about it? The items that the user adds to the shopping cart may not be purchased by him, so we increase the maintenance cost, but the advantage is that users can see their shopping information anytime and anywhere. Remember that when building any e-commerce website, you must consider it from the user's perspective.

Comparison found that the first method is more user-friendly and has a better user experience, so most mainstream e-commerce websites use the first method.

Option 2: (Non-member)

That means you may not be a member of this website when you are shopping, but you want to To purchase goods, we will provide you with a special account (tourist). The specific implementation ideas are as follows: When the user purchases and saves it through cookies, and the user does not want to register during checkout, we obtain his mobile phone number and address, and then automatically generate it in the background. A normal user, saves the data in the database and clears the cookies.

The above two solutions are what we often encounter on daily shopping websites. Therefore, we must have a clear idea when writing the shopping cart code, otherwise the user experience will be greatly compromised.

The above is the detailed content of Implementation principle of php shopping cart. For more information, please follow other related articles on the PHP Chinese website!