require_once 'path/to/autoload.php'; $router = new Router(); $router->post('/login', function () { // Handle login request }); $router->dispatch();In this example, we define a route for a POST request to the `/login` URL. The second argument is a callback function that will be executed when the route is matched. Package Library: In this example, we are using the `Router` class from a package library that we have included with `require_once 'path/to/autoload.php'`. The package library is not specified in this example, but it could be any Router package that provides similar functionality. Some popular PHP Router packages include: - FastRoute - Symfony Routing - Laravel Routing These packages provide additional features and functionalities beyond basic routing, such as route parameters, middleware, and URL generation.