Stage-4 PHP with Object-Oriented Programming

This repository contains simple scenario-based tasks to practice Object-Oriented Programming (OOP) in PHP.

Task 1: Create a Basic Product Class

Objective

Understand the basics of classes, objects, properties, and methods.

Details

Create a Product class in PHP with the following properties:

• name
• price
• description

Implement methods to set and get these properties, and a method displayProductDetails() to output the product details in a readable format.

Requirements

• The class should have private properties.
• Use constructor overloading to initialize the object properties.
• Implement getter and setter methods for each property.
• Create an instance of the Product class and use its methods to demonstrate functionality.

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Task 2: Implement a Simple Shopping Cart System

Objective

Practice using classes, objects, and basic object interactions.

Details

Create a ShoppingCart class that can hold multiple Product objects. The cart should support adding, removing, and calculating the total price of products.

Requirements

• The ShoppingCart class should have a private property to store an array of Product objects.
• Implement the following methods:
  • addProduct(Product $product) - Adds a product to the cart.
  • removeProduct(Product $product) - Removes a product from the cart.
  • calculateTotalPrice() - Calculates and returns the total price of all products in the cart.
• Demonstrate functionality by adding and removing products and calculating the total price.

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Task 3: Develop a Library Management System

Objective

Understand inheritance and polymorphism.

Details

Create a library management system with different types of materials: Book, Magazine, and DVD. Each material type should inherit from a base class LibraryMaterial and override its methods where necessary.

Requirements

• The LibraryMaterial class should have properties like:
  • title
  • author
  • ISBN
  • publicationYear
• Create subclasses Book, Magazine, and DVD, each with specific properties like:
  • pageCount (for books)
  • duration (for DVDs)
• Implement methods in the base class and override them in the subclasses to demonstrate polymorphism.
• Create a method displayMaterialDetails() that outputs the details of each material.

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Task 4: Build a Simple Contact Management System

Objective

Learn about encapsulation and data validation.

Details

Create a Contact class that represents a person's contact information (e.g., name, email, phone number). Include validation for email format and phone number length.

Requirements

• Use private properties for name, email, and phone number.
• Implement setter methods that include validation:
  • Ensure the email contains an "@" symbol.
  • Validate the phone number length.
• Implement getter methods to retrieve contact information.
• Create a test script that demonstrates setting and getting properties with validation.

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How to Run the Code

1. Ensure you have PHP installed on your system.
2. Clone this repository and navigate to the respective task directories.
3. Run the PHP files using the command:

   php filename.php

4. Observe the output to verify the implemented functionalities.

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Conclusion

These tasks help in understanding fundamental OOP concepts in PHP, including encapsulation, inheritance, polymorphism, and object interactions. Completing them will enhance your PHP development skills and prepare you for real-world applications.

Happy Coding! 🚀