What is the main role and features of PHP as a programming language?

PHP is a server-side programming language focused on creating dynamic web pages and web applications. Its main role is to handle requests on the server, generate HTML, and interact with databases.

Features of PHP:

• Interpreted language: PHP code is executed on the server without prior compilation.
• Ease of use: Easy to start development thanks to simple syntax and broad support.
• Built-in web support: Has many functions for working with HTTP, sessions, cookies, forms.
• Wide ecosystem: A large number of frameworks (Laravel, Symfony), CMS (WordPress, Drupal).
• Dynamic typing: Variable types are determined at runtime.

Example of a simple PHP script:

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

Thus, PHP serves for quick and efficient development of the server part of web applications with an emphasis on simplicity and integration with web technologies.