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 are Loops?
**Loops** allow a programmer to execute the same block of code repeatedly instead of re-writing code that needs to be executed multiple times. 

We will make heavy use of conditional statements in this section, so if you want to jog your memory, head over to the [lesson on conditionals](https://www.educative.io/courses/learn-php/if-else-statement).

The following figure illustrates how loops work:


This lesson introduces the concepts of loops and the different kinds of loops in PHP.

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

Introduction to Loops

What are Loops?