Learn PHP basics with hands-on practice in hello world in PHP, variables in PHP, functions in PHP, arrays in PHP, PHP inheritance, PHP exceptions, and more.

This interactive course introduces you to the fundamentals of PHP programming, one of the most widely used languages in web development. Starting with a simple hello world in PHP, you’ll explore the basics, including PHP output, variables in PHP, and PHP data types. You’ll also learn about PHP constants, arithmetic operators, comparison operators, logical operators, and assignment operators.

The course progresses into conditional statements in PHP, PHP switch, and various loops such as PHP for loop, PHP while loop, and more. You will then dive deeper into functions in PHP, understand PHP variable scope, and learn PHP pass by reference or value. Additionally, you’ll gain a working knowledge of strings in PHP, PHP string operations, and handling arrays in PHP, including PHP multidimensional arrays.

In the advanced sections, you’ll explore classes in PHP, inheritance, constructors, and destructors, handling PHP exceptions with PHP throw and catch exceptions.

Learn PHP

# What is Inheritance
Inheritance is a very useful and popular concept that enhances the object-oriented programming experience. It allows a programmer to create and define classes that can inherit and build upon functionalities already present in existing classes without having to duplicate a lot of the code.
* Provides a way to create a **new** class from an **existing** class.

* The **new** class is a *specialized* version of the **existing** class.

* Allows the **new** class to override or redefine inherited *methods* from the **existing** class to perform differently than how they are defined in the **existing** class.


# Terminology
* **Base Class** (or Parent): *inherited* by **child** class.
* **Derived Class** (or child): *inherits* from base class.

# Characteristics

A **derived** class has:

* All *members* defined in the **derived** class.
* All *​members* declared in the **base** class.

A **derived** class can:

* Use all `public` and `protected` members defined in the **derived** class.
* Use all `public` and `protected` members defined in the **base** class.
* Override an *inherited* member

A **derived** class cannot: 
* *Inherit* *constructors* and **destructors** 

Inheritance is one of the major reasons for using object-oriented programming in PHP.
 
# Notation

Classes can *inherit* the properties and methods of another class using the keyword `extends`.

Let's take a look at the notation below.

This lesson introduces the concept of Inheritance focusing on base and derived classes.


PHP Basics

PHP Variables

PHP Operators

PHP Conditional Statements

PHP Loops

PHP Functions

PHP Strings

PHP Arrays

PHP Assessment 1

PHP Classes

Exception Handling in PHP

PHP Assessment 2

Inheritance

What is Inheritance