PHP Object-Oriented Programming Quiz

What is a class in PHP?

• A class in PHP is a blueprint for creating objects.

• A class in PHP is a built-in variable

• A class in PHP is used for storing data

• A class in PHP is a type of function

Explain the concept of object in PHP.

• An object in PHP is a function that can be used to manipulate data.

• An object in PHP is a keyword used to define a new data type.

• An object in PHP is a type of variable that can only store numbers.

• An object in PHP is a data type that allows you to store data and functions together.

How does inheritance work in PHP?

• Inheritance in PHP allows a class to inherit properties and methods from another class.

• Inheritance in PHP is not supported

• Inheritance in PHP requires the child class to redefine all the methods from the parent class

• Inheritance in PHP only allows a class to inherit properties but not methods

What is the purpose of polymorphism in PHP?

• To restrict access to certain methods within a class

• To allow objects of different classes to be treated as objects of a common superclass

• To prevent inheritance of properties and methods

• To increase the speed of code execution

Define encapsulation in the context of PHP.

• Storing data and methods in separate files

• Bundling data and methods into a single unit (class)

• Separating data and methods into different units

• Combining data and methods into separate classes

How is abstraction implemented in PHP?

• Using global variables

• Abstract classes and interfaces

• By creating multiple instances of a class

• By directly accessing private properties and methods

What are the key features of a class in PHP?

• Variables, loops, and functions

• Properties, methods, constructors, and access modifiers

• Inheritance, polymorphism, and encapsulation

• HTML, CSS, and JavaScript

Discuss the advantages of using inheritance in PHP.

• Less readable code

• Faster execution time

• Code reusability, hierarchical structure, and maintainable codebase

• Limited flexibility

Give an example of polymorphism in PHP.

• Method overriding

• Encapsulation

• Inheritance

• Method overloading

Why is encapsulation important in PHP?

• To slow down the execution of the program

• To make the code more difficult to understand

• To restrict access to certain properties and methods of a class, preventing unauthorized access and manipulation.

• To make the code more vulnerable to security threats