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What is PHP? A Beginner’s Guide to Server-Side Programming

June 9, 2026 · admin · 15 min read

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What is PHP? Complete Beginner’s Guide (2026)

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Learn what PHP is, how it works, and why it remains one of the most popular programming languages for web development in 2026.

What is PHP? A Complete Beginner’s Guide

PHP is one of the most widely used programming languages for web development. It powers millions of websites, including WordPress, which runs a significant portion of the internet.

If you’re planning to become a web developer or want to understand how dynamic websites work, learning PHP is a great place to start.

What Does PHP Stand For?

PHP stands for PHP: Hypertext Preprocessor.

It is a server-side scripting language used to create dynamic web applications and websites.

Unlike HTML, which displays static content, PHP can generate content dynamically based on user actions, database information, and business logic.

Why Learn PHP?

PHP continues to be a popular choice because:

  • Easy to learn
  • Open source and free
  • Large community support
  • Works with most hosting providers
  • Integrates easily with databases
  • Powers WordPress, WooCommerce, and many popular applications

How PHP Works

When a user visits a PHP page:

  1. Browser sends a request to the server.
  2. Server executes the PHP code.
  3. PHP generates HTML output.
  4. Browser displays the HTML page.

Example

<?php
  echo "Hello World!";
?>
Output:
Hello World!

 

The PHP code runs on the server, and only the result is sent to the browser.

Requirements to Run PHP

Before writing PHP code, you need:

  • Web Server (Apache or Nginx)
  • PHP Installed
  • Code Editor (VS Code recommended)

For local development you can use:

  • XAMPP
  • WAMP
  • LocalWP

Your First PHP Program

Create a file named:

index.php

Add the following code:

<?php
echo "Welcome to PHP!";
?>

Save the file and open it in your browser.

You should see:

Welcome to PHP!

PHP Syntax Basics

Every PHP script starts with:

<?php

and ends with:

?>

Example:

<?php
echo "Learning PHP";
?>

Variables in PHP

Variables store data.

Example:

<?php
$name = "Loki";
$age = 25;

echo $name;
echo $age;
?>

Output:

Loki
25

Data Types in PHP

PHP supports several data types:

String

$name = "Loki";

Integer

$age = 25;

Float

$price = 99.99;

Boolean

$isActive = true;

Array

$colors = ["Red", "Blue", "Green"];

Comments in PHP

Single Line:

// This is a comment
Multi Line:
/*
This is a
multi-line comment
*/

Why PHP is Important for WordPress Developers

WordPress is built using PHP.

When you learn PHP, you can:

  • Create custom themes
  • Build custom plugins
  • Modify WooCommerce functionality
  • Develop custom APIs
  • Handle form submissions

This makes PHP one of the most valuable skills for WordPress developers.

Conclusion

PHP remains a powerful and beginner-friendly language for web development. Understanding the basics of PHP is the first step toward building dynamic websites, WordPress themes, plugins, and custom web applications.

In the next article, we’ll learn about PHP Variables, Constants, and Data Types in Detail.