// Define a route $router->addRoute('home', '/', 'HomeController@index'); // Get the URL for the 'home' route $url = $router->getUrl('home'); // Output: '/' // Define a route with parameters $router->addRoute('user', '/user/{id}', 'UserController@index'); // Get the URL for the 'user' route with parameter $url = $router->getUrl('user', ['id' => 1]); // Output: '/user/1'The `getUrl` method is part of a package library that includes a PHP router class, such as FastRoute or Symfony Routing. These packages provide routing functionality for PHP applications to map HTTP requests to specific code functions.