What are the key components of MVC (Model-View-Controller) and how do they interact in PHP development?

The key components of MVC are: 1. Model: Represents the data and business logic of the application. 2. View: Represents the presentation layer of the application. 3. Controller: Acts as an intermediary between the Model and View, handling user input and updating the Model accordingly. In PHP development, these components interact as follows: - The Controller receives user input, processes it, and updates the Model. - The Model holds the data and business logic of the application. - The View then fetches data from the Model and presents it to the user. 

// Example PHP code implementing MVC

// Model
class User {
    public $name;

    public function __construct($name) {
        $this->name = $name;
    }
}

// View
class UserView {
    public function output($user) {
        return "User name: " . $user->name;
    }
}

// Controller
class UserController {
    public function getUser() {
        $model = new User("John Doe");
        $view = new UserView();

        return $view->output($model);
    }
}

// Implementation
$controller = new UserController();
echo $controller->getUser();

Keywords

Model View Controller PHP development Interaction

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