Slim does not have a view layer like traditional MVC frameworks. Instead, Slim’s “view” is the HTTP response. Each Slim application route is responsible for preparing and returning an appropriate PSR-7 response object.
Slim’s “view” is the HTTP response.
That being said, the Slim project provides the Twig-View and PHP-View components to help you render templates to a PSR-7 Response object.
You are not limited to the Twig-View and PHP-View components.
You can use any PHP template system provided that you ultimately
write the rendered template output to the PSR-7 Response object’s body.