What alternative methods can be used to dynamically include files in PHP scripts without relying on $_GET variables?

Using alternative methods like sessions or cookies can be used to dynamically include files in PHP scripts without relying on $_GET variables. By storing the necessary information in a session or cookie, you can retrieve it when needed to determine which file to include.

<?php
session_start();

// Set the file to include based on a session variable
if(isset($_SESSION['file_to_include'])){
    $file_to_include = $_SESSION['file_to_include'];
    include $file_to_include;
}
?>