index.php

<?php

class Model {

    public $text;



    public function __construct() {

        $this->text = 'Hello world!';

    }

}





class View {

    private $model;



    public function __construct(Model $model) {

        $this->model = $model;

    }



    public function output() {

        return '<a href="index.php?action=textclicked">' . $this->model->text .'</a>';

    }



}



class Controller {

    private $model;



    public function __construct(Model $model) {

        $this->model = $model;

    }

    public function textClicked() {

        $this->model->text = 'Updated Hello World!';

    }

}







//initiate the triad

$model = new Model();

//It is important that the controller and the view share the model

$controller = new Controller($model);

$view = new View($model);

if (isset($_GET['action'])) $controller->{$_GET['action']}();

echo $view->output();


//References: https://r.je/mvc-in-php.html