mvc.php

<?php

class response {

    public $response = [];

    function __construct(){
        $this->addNormalResponse();
        return $this->response;
    }

    function data(){
        $this->response[] =  [
            'data' => ['array of data']
        ];

        return $this;
    }

    function addNormalResponse(){
        $this->response[] = [
            'response' => true
        ];
    }
}


// helper function
function response(){
    return new response();
}

class Controller{

    public function response(){
        return response();
    }

    public function responseWithData(){
        return response()->data();
    }
}

class Kernal{

    public function execute($controller, $method){
        $this->response(call_user_func([new $controller(),$method]));
    }

    public function response($data){
        header('Content-Type: application/json');
        echo json_encode($data);
    }
};

$kernal = new Kernal();

$kernal->execute('Controller','response');

$kernal->execute('Controller','responseWithData');