class App { public function __construct() { // Constructor logic here } public function init() { // Application initialization here } public function run() { // Application execution code here } } $app = new App(); $app->init(); $app->run();
namespace App; class Model { // Model code here } namespace App\Controller; use App\Model; class UserController { public function index() { $model = new Model(); // Controller code here } }In this example, we make use of the namespace feature of PHP to define the App model and the controller classes. The model class is defined in the `App\Model` namespace, while the UserController is defined in the `App\Controller` namespace. The `index` method of the UserController uses an instance of the Model class to perform its operation. Package Library: The PHP App model can be used with various package libraries such as Laravel, Symfony, CodeIgniter, and Yii. These package libraries provide their implementation of the App model, making it easier for developers to create applications using the App model design pattern.