Variables and Constants

Welcome to a new chapter in your PHP journey! In this lesson, you’ll learn how to use variables to store data and constants to define unchangeable values. Let’s get started!

What Are Variables?

Variables are used to store data that can change during the execution of a script. In PHP:

• Variable names start with a $ symbol.
• They can store different types of data like strings, numbers, and arrays.

Example:

<?php
  $name = "Alice";
  $age = 25;
  echo "Name: $name, Age: $age";
?>