Download Page In CodeIgniter

<?php

class Demo extends CI_Controller{
    function index(){
        echo "<a href=\"download\">Download This File</a>";
    }
       
    function download(){
        $this->load->helper('download');
        $this->load->helper('url');
        $contents = file_get_contents(base_url().'doc/luna.doc');
        $name = 'luna.doc';
        force_download($name, $contents);     
    }

}

Download Page In CodeIgniter