class IndexController { public function indexAction() { // Process user request $data = $this->processRequest(); // Call model to fetch data $model = new DataModel(); $result = $model->getData($data); // Render view $view = new View(); $view->render('index', $result); } }
class UserController { public function loginAction() { // Process user login request $data = $this->processRequest(); // Authenticate user $auth = new Auth(); $result = $auth->login($data['username'], $data['password']); // If authentication is successful, redirect to dashboard if ($result) { header('Location: /dashboard'); exit(); } else { // If authentication fails, show error message $view = new View(); $view->render('login', ['error' => 'Invalid credentials']); } } }In this example, the loginAction function is defined in the UserController class, which handles the user login request, authenticates user credentials, and either redirects to the dashboard or shows an error message if authentication fails. The package library for these examples could be a PHP framework such as Laravel, Symfony, or CodeIgniter, which provides a pre-defined structure for organizing controllers, models, and views. However, the examples could also be part of a custom PHP application architecture.