Quick Guide To PHP Oops

The purpose of this article is to provide a complete understanding of PHP OOPs, and to portray some examples of how they can be applied in PHP.

We will also take a close look at the advantages of OOP in the PHP web development process and how it can be applied.

An Object-Oriented Programming (OOP) model is one that is based on the concept of objects, and revolves around them as a dominant feature.

The data and behavior contained in an object, which is an instance of a class, are encapsulated within objects, which are instances of classes that are responsible for defining their properties and methods.

The OOP model is one of the most powerful paradigms that is used in many modern programming languages including PHP.

PHP OOPs – What is it?

PHP OOP allows you to create more complex and maintainable web applications by organizing code into reusable, modular components called objects.

Object-oriented programming involves creating objects that include both data and functions, whereas procedural programming involves writing procedures on data.

PHP OOP is based on four fundamental principles or pillars, which are:


Abstraction is the process of hiding the implementation details of a class and exposing only the essential features to the user.

Abstraction is achieved through the use of abstract classes and interfaces.

Abstract classes are classes that cannot be instantiated but can be used as base classes for other classes.

Interfaces are a set of method signatures that define the behavior of a class.


Encapsulation is the practice of hiding the implementation details of a class from the outside world and exposing only a public interface.

Encapsulation is achieved through the use of access modifiers such as public, private, and protected.

Public methods and properties can be accessed from anywhere, private methods and properties can only be accessed within the class, and protected methods and properties can be accessed within the class and its subclasses.


Inheritance is the process of creating new classes based on existing classes.

The new class inherits the properties and methods of the existing class and can also add new properties and methods or override existing ones.

Inheritance is achieved through the use of the extends keyword.


Polymorphism is the ability of objects to take on different forms and behave differently depending on the context.

Polymorphism is achieved through the use of abstract classes, interfaces, and method overriding. Method overriding is the process of providing a new implementation for a method that already exists in a superclass.


Hint: The “Don’t Repeat Yourself” (DRY) principle is about reducing repetition in your work. Rather than reusing the same codes from an application, it would be better to extract the most common ones from it, place them in one place, and reuse them throughout the application.

What are PHP Classes and Objects?

An object-oriented programming language is made up of two main aspects: classes and objects.

A class is a blueprint for creating objects that share common properties and behaviors. In PHP OOP, a class is defined using the class keyword followed by the name of the class.

In order to understand the difference between classes and objects, let’s look at the following illustration:





Here is another example of a class and objects:





Objects are instances of classes, and classes are templates for objects.

Once a class is defined, objects can be created from that class using the new keyword.

The properties and behaviors of a class will be passed along to each object when it is created, but each object will have a value for the properties that are inherited from the class.

Php Oops Benefits

There are several advantages to object-oriented programming over procedural programming, including the following:

  • The advantages of OOP include speed and ease of implementation.
  • Programs can be organized in a clear manner by using OOP.
  • A key benefit of OOP is that it can help to keep PHP code DRY, or Don’t Repeat Yourself, which makes the code more maintainable, modifiable and.
  • In the world of object oriented programming, it is possible to develop a fully reusable application with less code and within a shorter period of time.


PHP OOP is a powerful programming technique that allows you to create modular, reusable, and maintainable code. By using objects and classes, you can create complex applications that are easy to understand and modify.

With PHP’s support for OOP, you can take advantage of these benefits and create robust and flexible web applications.

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