What is PHP?

PHP stands for “PHP: Hypertext Preprocessor”. It is a widely-used, open-source server-side scripting language especially suited for web development.
Example:

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

What are the uses of PHP?

PHP is used to create dynamic web pages, manage sessions, handle forms, connect to databases, send emails, build APIs, and more.

What is the history of PHP?

PHP was created by Rasmus Lerdorf in 1994. It started as a set of Common Gateway Interface (CGI) binaries written in the C programming language.

How to set up the PHP environment?

You can set up PHP using software bundles like:

• XAMPP (Windows/Linux)
• WAMP (Windows)
• LAMP (Linux)
• MAMP (Mac)

Steps:

1. Download and install XAMPP
2. Place your .php files in the htdocs folder
3. Start Apache server from the XAMPP control panel
4. Open browser and navigate to: http://localhost/yourfile.php

What is the PHP file  and extension?

PHP files have the .php extension and contain code inside <?php ?> tags.

<?php
  // This is a PHP file
  echo "This is my first PHP page.";
?>