PHP Tutorial

INTRODUCTION TO PHP

👋 Introduction to PHP

PHP (Hypertext Preprocessor) is a popular server-side scripting language used to build dynamic websites and web applications. It is embedded within HTML and executed on the server.

💡 Did You Know? PHP powers popular platforms like WordPress, Facebook (originally), and Wikipedia.

📄 Basic PHP Syntax

PHP code is written inside <?php ... ?> tags. Here's an example:

<?php
  echo "Hello, world!";
?>

This will output:

Hello, world!

🔧 What Can PHP Do?

Generate dynamic page content
Collect form data
Send and receive cookies
Connect to databases like MySQL
Create, read, write, and delete files on the server

📁 PHP File Structure

PHP files usually have a .php extension. Here's a simple structure:

<!DOCTYPE html>
<html>
<body>

  <h1>Welcome</h1>

  <?php
    echo "Today's date is " . date("Y-m-d");
  ?>

</body>
</html>

⚠️ Important: PHP code runs on a server with PHP installed. You won't see results if you just open the .php file in a browser — you need a server environment like XAMPP or Live Server with PHP extension.

🌐 Where to Write PHP?

Locally: Use XAMPP, WAMP, or MAMP for local development.
Online: Try platforms like 000webhost or Replit with PHP templates.

✅ Conclusion

PHP is a powerful language for server-side development. Whether you're building contact forms, dynamic pages, or entire CMS systems — PHP is a go-to language trusted by millions of developers.

✅ Tip: Start with simple PHP scripts, and gradually explore variables, conditionals, loops, and functions in PHP to build a solid foundation.

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