How do I use Slim/Lumen for lightweight APIs?

Slim and Lumen are lightweight microframeworks for PHP that make it easy to build fast APIs. They are optimized for speed and simplicity, making them perfect choices for developers who want to create efficient web services quickly.

    get('/api/v1/hello/{name}', function ($request, $response, $args) {
        $name = $args['name'];
        $response->getBody()->write("Hello, $name!");
        return $response;
    });

    // Run the app
    $app->run();
    ?>