PHP Introduction

PHP is a popular server-side programming language used to create dynamic web applications. It is widely used in web development due to its ease of use and flexibility. PHP is particularly popular in the WordPress, Laravel, and Symfony frameworks.

WordPress is a content management system (CMS) built on PHP. It is used to create websites and blogs of all sizes, from small personal blogs to large enterprise websites. WordPress provides a user-friendly interface and a powerful set of tools for managing content and customizing the appearance of a website. PHP is used extensively in WordPress plugins, themes, and other customizations.

Laravel is a PHP web application framework used to build robust and scalable web applications. It provides an elegant syntax and a wide range of features, including a powerful routing system, object-relational mapping (ORM), and authentication. Laravel is used to build a variety of applications, from simple blogs to complex enterprise web applications.

Symfony is another PHP web application framework used to build large-scale, complex web applications. It provides a set of reusable components that can be used to build web applications quickly and efficiently. Symfony is known for its flexibility and scalability, and it is used by many high-traffic websites and applications.

In summary, PHP is a powerful and versatile programming language used in a variety of web development frameworks and applications, including WordPress, Laravel, and Symfony. These frameworks provide developers with the tools and resources they need to build robust, scalable web applications quickly and efficiently.

Display “Hello, World!” in PHP:

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

Create a function that calculates the sum of two numbers in PHP:

<?php
function add_numbers($num1, $num2) {
$sum = $num1 + $num2;
return $sum;
}
echo add_numbers(5, 10); // Output: 15
?>

Create a simple loop that prints numbers from 1 to 10 in PHP:

<?php
for ($i = 1; $i <= 10; $i++) {
   echo $i . "<br>";
}
?>