Description:

The provided PHP code demonstrates an object-oriented programming (OOP) approach to creating a simple shopping cart system. This implementation encapsulates the functionality related to products and the shopping cart within dedicated classes, promoting modularity and maintainability.

1. Class Structure

The code defines two primary classes: Product and Cart.

• Product Class: This class represents individual products in the shopping cart. It encapsulates properties such as id, name, price, and amount. The constructor initializes these properties, ensuring that each product object is created with the necessary attributes.
• Cart Class: This class manages the shopping cart's operations. It contains an array to hold Product objects and methods to manipulate the cart, such as adding products and displaying the cart contents. The cart also calculates the total price of the items.

2. Cart Initialization

The shopping cart is initialized using PHP sessions. If the session does not already contain a cart, it initializes an empty array to hold the cart items. This allows the cart to persist across different pages during a user's session.

3. Adding Products to the Cart

The addToCart method in the Cart class allows users to add products to the cart. When a product is added, a new Product object is created with the specified attributes (ID, name, price, and amount). This method appends the product to the cart's product list.

4. Displaying Cart Contents

The displayCart method iterates through the products in the cart and calculates the total cost. It outputs the details of each product, including its name, price, and quantity, along with the overall total. This method provides a clear view of the items currently in the cart.

5. User Interaction

The HTML portion of the code allows users to interact with the shopping cart. It displays available products and includes forms for users to specify the quantity they wish to add to the cart. When a user submits the form, the specified product is added to the cart, and the cart contents are updated accordingly.

Conclusion

This OOP PHP shopping cart implementation effectively demonstrates the principles of encapsulation and modular design. By organizing related functionalities into classes, the code becomes easier to manage and extend. This structure is particularly beneficial for future enhancements, such as integrating payment processing or adding user authentication features. Understanding and applying these OOP concepts is crucial for developing scalable web applications and is a valuable skill for PHP developers, especially in e-commerce contexts.

Features:

• PHP OOP Shopping Cart
• Render UI via PHP

Requirements:

PHP Interpreter

Instructions:

Run on Local PHP Server or Online PHP Server