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

We use **abstract classes** when we want to commit the programmer to write a certain class method, but we only know the name of the method without any details of how it should be written.

For example, circles, rectangles, and octagons may look different but are all 2-D shapes. This means they all have an area and a circumference. It makes sense, then, to group the code that they have in common into one parent class. In this parent class, we’ll have the area and circumference properties, and we may also have a method that calculates the area (this could be a problem though because different shapes require different calculations). Abstract classes are especially useful in such cases when we need to commit the child classes to certain methods that they inherit from the parent class but we don’t know how exactly that code will be used.


Learn about abstract classes and methods as well as non-abstract methods inside an abstract class.

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 Abstract Classes and Methods