how to create a global variable that can be accessed in any view page in codeigniter

1)create a class in application/library folder
2)create a php file to set data to library
3)in autoload.php call the library

Globals.php//in application/library
<?php
class Globals {

// Pass array as an argument to constructor function
public function __construct($config = array()) {

// Create associative array from the passed array
foreach ($config as $key => $value) {
$data[$key] = $value;
}

// Make instance of CodeIgniter to use its resources
$CI = & get_instance();

// Load data into CodeIgniter
$CI->load->vars($data);
}

}

?>

Globals.php// in application/config /

$config['name']='hithin';

demo.php//controller
<?php
defined('BASEPATH') OR EXIT('Dirrect access not allowed');
class Demo extends CI_Controller
{
    public function __construct() {
        parent::__construct();
       
    }
    public function index()
    {
        $this->load->view('demo_view');
    }
}

demo_view.php //view
<?php
echo $name;