PHP OOP: What is OOP in PHP, Why use, PHP Classes and Objects

Here we are going to see What is OOP in PHP, Why we should use OOP, and Introduction to classes and objects.

What is OOP in PHP

In most programing language there is two way to coding methodologies, the first is procedural, and the second is object-oriented programming.

Object-Oriented Programming in short is also called OOP.

OOP makes code more modular, reusable, well organized, and easier to debug.

If we are going to create a simple PHP script there is no need to use OOP, this approach is mostly used for the projects that are medium or large in size.

Why we should use OOP?

Here are a few reasons why we should use OOP over Procedural-

  • Using OOP we can make our code modular and easy to manage. It’s not a problem for small programs but for the large programs it could become a hassle to use procedural methodology.
  • The structure of code is clear in OOP. which makes it easy to modify and maintain.
  • OOP is the best way to implement one of the first rules of programming “Don’t repeat yourself”.
  • Since most of the function is reusable it cut development time really short.

Classes and Objects Explained

Classes and Objects are two of the most important parts of Object-oriented programming.

In Technical terms, we can say that “A class acts as the template for the objects while an object is an instance of a class”.

Classes and objects make it easier to implement almost the same code.

So when we want to create a function to do something instead of creating a whole code block from scratch.

Here is some real-life example of OOP-

ClassObject
FruitApple, Banana, Mango
SmartphoneSamsung, Realme, Oppo
PetDog, Cat, Cow
ManAshok, Suresh, Ramesh

We only have to create a class once and once it creates we can as many as objects that we want.

We create different properties and methods in the class and all of its objects inherit from the classes.

However, that doesn’t mean we can not add other methods and properties inside an object.

We can add as well as override values of any properties during the creation of the object.