Constructor method in PHP - Mini Project: Build & Apply

Constructor method

📖 Scenario: You are creating a simple PHP class to represent a Book in a library system.

🎯 Goal: Build a PHP class called Book that uses a constructor method to set the book's title and author when creating a new Book object.

📋 What You'll Learn

Create a class named Book

Add a constructor method named __construct that accepts two parameters: $title and $author

Inside the constructor, assign the parameters to the class properties $title and $author

Create an object of the Book class with the title '1984' and author 'George Orwell'

Print the book's title and author in the format: Title: 1984, Author: George Orwell

💡 Why This Matters

🌍 Real World

Constructors are used in real-world PHP applications to set up objects with initial data, like user profiles, products, or articles.

💼 Career

Understanding constructors is essential for PHP developers to write clean, reusable, and organized code in web development jobs.

1

Create the Book class with properties

Create a PHP class called Book with two public properties: $title and $author.

PHP

<?php

// Create class Book with public properties $title and $author
// Your code here

Need a hint?

Use class Book { public $title; public $author; } to define the class and properties.

2

Add the constructor method

Inside the Book class, add a constructor method named __construct that takes two parameters: $title and $author. Assign these parameters to the class properties $this->title and $this->author.

PHP

<?php

class Book {
    public $title;
    public $author;

    // Add constructor method here
    // Your code here
}

Need a hint?

Use public function __construct($title, $author) { $this->title = $title; $this->author = $author; }.

3

Create a Book object

Create a new object called $book from the Book class, passing '1984' as the title and 'George Orwell' as the author to the constructor.

PHP

title = $title;
        $this->author = $author;
    }
}

// Create a Book object named $book with title '1984' and author 'George Orwell'
// Your code here

Need a hint?

Use $book = new Book('1984', 'George Orwell'); to create the object.

4

Print the book details

Print the book's title and author in this exact format: Title: 1984, Author: George Orwell using the $book object's properties.

PHP

title = $title;
        $this->author = $author;
    }
}

$book = new Book('1984', 'George Orwell');

// Print the book details here
// Your code here

Need a hint?

Use print("Title: {$book->title}, Author: {$book->author}"); to show the output.