Are there any specific design patterns or frameworks that can help with creating a modular PHP application?

When creating a modular PHP application, it is important to use design patterns and frameworks that promote modularity and scalability. One popular design pattern that can help with this is the MVC (Model-View-Controller) pattern, which separates the application logic into three interconnected components. Additionally, using a framework like Laravel or Symfony can provide built-in support for modular development through features like namespaces, service providers, and dependency injection.

// Example of using the MVC pattern in a modular PHP application

// Controller
class UserController {
    public function index() {
        // logic for displaying user list
    }
}

// Model
class User {
    public function getAllUsers() {
        // logic for fetching all users
    }
}

// View
class UserView {
    public function renderUserList($users) {
        // logic for rendering user list
    }
}

// Implementation
$userController = new UserController();
$users = (new User())->getAllUsers();
(new UserView())->renderUserList($users);