Simple PHP Router without a Framework

Creating a PHP router system involves defining routes that map to specific pages or actions in your web application.

In this example, we have a simple router class (Router) that allows you to define routes, associate them with page names, and specify the code to execute for each page. The main entry point (index.php) initializes the router, defines routes, and handles the current request, including a 404 page for unhandled routes.

When a user accesses your application, the router determines which page to display based on the requested URL. You can expand this router system by adding more routes and customizing the pages and code associated with each route.