The simple way to export excel from codeigniter

gistfile1.php

<?php
class Eksport extends CI_Controller {

  function export() {
    $file_name = "Nama file.xls";
    header("Content-type: application/vnd.ms-excel");
    header("Content-Disposition: attachment; filename={$file_name}");
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    $data = array(
      // define your selfe
    );
    $this->load->view("view_name", $data);
  }
  
}