MVC_CodeIgniter_Simple.php

// CI_Controller.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Welcome extends CI_Controller {
	public function index()
	{
		$this->home() ;
	}
	public function home(){
		$this->load->model('CI_Model') ;
		$data['name'] = $this->cimodel->getName() ;
		$this->load->view('welcome_message',$data) ;
 	}
}

// CI_Model.php
<?php
	defined('BASEPATH') OR exit('No direct script access allowed');
	class cimodel extends CI_Controller{
		function __construct() {
                parent::__construct();
            }
		function getName(){
			return "Đặng xuân Vui" ;
		}
	}
?>

// CI_View.php

<?php
  echo $name ;
?>