PHP PHP Object-Oriented Programming

Question 1

Which keyword is used to define a class in PHP?

Accepted Answer

class

Answer

The class keyword is used to declare a class definition in PHP.

Question 2

What does $this refer to inside a PHP class method?

Accepted Answer

The current object instance

Answer

$this is a pseudo-variable that refers to the current object (instance) inside a method.

Question 3

Which keyword is used to create a new instance of a class in PHP?

Accepted Answer

new

Answer

The new keyword instantiates a class, calling its constructor and returning the object.

Question 4

What is the name of the special method automatically called when an object is created in PHP?

Accepted Answer

__construct()

Answer

__construct() is the PHP magic method that serves as the constructor, called automatically on object instantiation.

Question 5

Which keyword enables one PHP class to inherit from another?

Accepted Answer

extends

Answer

The extends keyword creates an inheritance relationship, giving the child class access to the parent's public and protected members.

PHP - PHP Programming Language Practice Test