Gain insights into object-oriented programming in PHP. Discover classes, objects, methods, inheritance, and more. Build dynamic server-side applications using OOP techniques and PHP database management.

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Object-oriented programming is perhaps the dominant development paradigm for leading languages including Java, C#, and Python. The rich class and inheritance framework wasn’t fully implemented in modern PHP until 2015, and best practices for object-oriented programming are still emerging.

This course is an introduction to object-oriented programming in PHP. You’ll start with the basics of the OOP paradigm and get familiar with classes, objects, methods, and properties. You’ll then chain methods and properties using the this keyword before working with access modifiers and magic methods. With these basics down, you’ll take a deep dive into object-oriented programming in PHP, including inheritance, abstraction, polymorphism, and namespaces. After exploring exception handling, you’ll use these object-oriented techniques to build, manage, and edit a PHP database.

By the end of this course, you’ll be prepared to build dynamic server-side applications using object-oriented programming in PHP.

Object-Oriented Programming in PHP

# What is OOP?

**Object-oriented programming (OOP)** is a programming style in which it is customary to group all of the variables and functions of a particular topic into a single class.

# Why is OOP more efficient than procedural language?

Object-oriented programming is considered to be more advanced and efficient than the procedural style of programming. This efficiency stems from the following facts: 
* It supports better code organization.
* It provides modularity.
* It reduces the need for repetition.

That being said, we may still prefer the procedural style in small and simple projects. However, as our projects grow in complexity, we’re better off using OOP.

# What is a class?

In order to create a **class**, we group the code that handles a particular topic into one place. For example, we can group pieces of code that handle users into a “User” class, the code that handles posts into a “Post” class, and the code that is devoted to comments into a “Comment” class. Generally, we name classes using a singular noun that starts with a capital letter.

# How to declare a class
For the example given below, we’re going to create a `Car` class in which we’ll write code related to cars:


Learn about OOP and how to create a class with properties in PHP.

Introduction

Classes and Objects

Using the $this Keyword for Chaining Methods and Properties

Access Modifiers

Magic Methods and Constants Unveiled

Inheritance in Object-oriented Programming

Abstract Classes and Interfaces

Polymorphism and Type Hinting

Static Methods & Properties and Traits

Namespaces & Dependency Injection

Exception Handling

PHP Database

Model-view-controller (MVC)

Conclusion

Appendix

Introduction to OOP Class

What is OOP?

Why is OOP more efficient than procedural language?