MINI

C:/xampp/htdocs/ecertificate/application/libraries/

files >> C:/xampp/htdocs/ecertificate/application/libraries/Excel.php

 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

require_once "PHPExcel".EXT; 
  
class Excel extends PHPExcel { 
    public function __construct() { 
        parent::__construct(); 
    } 
}