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

# Basic operators
Comparison operators, as the name suggests, allow you to compare two values. The following table illustrates the different comparison operators in PHP:

|  **Operator**  | **Name** | **Example** | 
| --- | --- | - |
|   ==  |   Equal  | `a==b`     
|    === |  Identical   | `a===b`  
|    != |   Not Equal  |  `a!=b`
|  !==   |  Not Identical   | `a!==b`  
|  <   |   Less than  | `a<b`   
|   >  |  Greater than   | `a>b`    
|  <=   | Less than equal to    | `a<=b` 
|  >=   |  Greater than equal to   | `a>=b`   


> **Note:** For basic equality testing, the equal operator `==` is used. For more comprehensive checks, use the identical operator
`===`.

For instance, the `==` operator will return true when an integer `4` is compared with a character `'4'` but the `===` will return false. Run the code snippet below to see how this works:

This lesson covers the comparison operators and how you can use them in PHP. It also covers a special comparison operator, i.e., the spaceship operator. 

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

Comparison Operators

Basic operators

Operator	Name	Example
==	Equal	`a==b`
===	Identical	`a===b`
!=	Not Equal	`a!=b`
!==