Two Examples of Using Predefined Variables

First Predefined Variable Example ...

The `$_SERVER['SERVER_NAME']` variable contains the name of the server hosting the current script.
This would be my email and the server I am using. This example is shown below.


This script is running on the server: mail.harri679.soisweb.uwm.edu.

Second Predefined Variable Example ...

The `$_GET['name']` variable that I am using is to collect the user's name sent to the script using a URL query string.

Hello, Guest! This message is coming from a predefined GET variable.

What are Predefined Variables In PHP?

Predefined variables in PHP are built in variables that help provide information about the server and user input.
They are always available and do not need to be declared within the code. They can be very useful in PHP codes.