When shopping in an online store, its visitors add the selected products to the cart. The shopping process is usually straightforward, but the site builder can face numerous problems when writing the shopping cart code.
It is necessary
a special script
Instructions
Step 1
When creating a shopping cart for an online store, first determine how it works. Evaluate how the customer behaves on the site and how the shopping cart script should handle their actions. The buyer should be able to view the list of products and add the desired product to the cart by clicking the appropriate button. It is necessary to provide a field in which the buyer will indicate the number of units of the selected product. When you click on the "Add to cart" button, information about the name of the product and its quantity will be saved on the site - which means that the script must correlate with the database (usually MySQL). In a new window, the user will be shown information on the total cost of the order. If everything suits him, he can make a purchase by clicking the "Pay" button.
Step 2
It is necessary to provide for a situation when the buyer left the site without making a payment. In this case, the file with information about the ordered products must be deleted. There may be some complication of the script for tracking user authorization: if the user is not logged in, all information from the file is deleted. If authorized, then it is saved in order to enable the buyer to continue shopping the next time he visits the resource. The store visitor should also be able to change or clear the list of selected products at any time.
Step 3
The logic of the script says that there should be an "Add to cart" button on the store website. The "Pay" button can also be placed on the product selection page or moved to a new window that opens when you click the "View cart" button. In the same window, you should provide for the possibility of editing the list of goods and emptying the basket.
Step 4
After a complete study of the algorithm, it is necessary to choose the language in which the script will be written. PHP is the most commonly used scripting language. It is best to focus on it, although the basket can be implemented in JavaScript as well. The easiest way to create a shopping cart code is to find an option that someone has already implemented, carefully study it and create your own script based on it. There are many PHP sources on the net, you can always find the most suitable one.
Step 5
It should be borne in mind that self-written code for an online store potentially entails big security problems. Even in professional engines, vulnerabilities are found every now and then, often leading to theft of confidential data - for example, information about bank cards. If you do decide to create your own script, be sure to read the materials about common mistakes made when writing such programs.
