model = new Model(); } public function submitForm() { $name = $_POST['name']; $email = $_POST['email']; $message = $_POST['message']; $this->model->saveMessage($name, $email, $message); } }Package Library: The package library for this controller example would depend on the framework or application being used. If it is a custom MVC application, there may not be a package library. However, if you are using a framework like Laravel, there are built-in controller classes and methods that you can use instead of writing your own.