Example of Object-Oriented Programming (OOP) in PHP

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 In this example, we'll create a Car class with properties and methods to demonstrate the basic concepts of OOP, such as encapsulation, inheritance, and polymorphism.

php code

<?php

// Define the Car class
class Car {
    // Properties (attributes)
    public $brand;
    public $model;
    public $year;

    // Constructor method
    public function __construct($brand, $model, $year) {
        $this->brand = $brand;
        $this->model = $model;
        $this->year = $year;
    }

    // Method to get car information
    public function getCarInfo() {
        return "This is a {$this->year} {$this->brand} {$this->model}.";
    }
}

// Creating objects of the Car class
$car1 = new Car("Toyota", "Corolla", 2023);
$car2 = new Car("Ford", "Mustang", 2022);

// Accessing object properties
echo $car1->getCarInfo(); // Output: This is a 2023 Toyota Corolla.
echo "<br>";
echo $car2->getCarInfo(); // Output: This is a 2022 Ford Mustang.
?>

In this example:

  1. Encapsulation: The class encapsulates the data (brand, model, year) and the behavior (the getCarInfo method) within a single unit, providing a clear interface for the outside world.

  2. Constructor: The __construct method is a special method that is automatically called when an object is created. It initializes the object's properties with the values passed to the constructor.

  3. Inheritance: Although not demonstrated in this basic example, PHP supports inheritance, allowing you to create subclasses that inherit properties and methods from a parent class.

This example illustrates the fundamental principles of OOP in PHP, including creating classes, defining properties and methods, and creating objects of the class.

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