Predefined Variables Example

Server Name: trbrillo.soisweb.uwm.edu

Query String: No query string provided

What are predefined variables?
Predefined variables in PHP are built-in global variables that provide useful information about the server, environment, or user input.

Examples used in this file:

• $_SERVER: Contains information about the server and execution environment. Example: `$_SERVER['SERVER_NAME']` returns the server's hostname.
• $_GET: Used to retrieve query string parameters from a URL. Example: `example.php?example=test` will make `$_GET['example']` return "test".