$app = new Slim\App(); // define a route for GET requests to the homepage $app->get('/', function ($request, $response, $args) { // return a response with HTML content return $response->write('Welcome to my site!'); }); // define a route for POST requests to a contact form $app->post('/contact', function ($request, $response, $args) { // read form data from the request object $name = $request->getParam('name'); $email = $request->getParam('email'); $message = $request->getParam('message'); // process the form data and return a response if (sendEmailToAdmin($name, $email, $message)) { return $response->write('Thanks for contacting us!'); } else { return $response->write('Something went wrong. Please try again later.'); } }); // run the Slim application and handle incoming requests $app->run();In this example, the first route matches requests to the root URL ("/") and returns a simple welcome message. The second route matches POST requests to "/contact" and handles a form submission, reading the form data from the request object and processing it accordingly. Overall, Slim is a user-friendly and flexible routing library that can be easily integrated into PHP applications.