phpexcel.net make excel using php part 3

<?php
/**
 * PHPExcel
 *
 * Copyright (C) 2006 - 2011 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel
 * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    1.7.6, 2011-02-27
 */

error_reporting(E_ALL);
require_once 'Classes/PHPExcel/IOFactory.php';


$s='<ol>';
$objPHPExcel = PHPExcel_IOFactory::load('test2_gagal.xlsx');
for($i=1;$i<12;$i++){
    $s.="<li>read B$i =".
    $objPHPExcel->getActiveSheet()
      ->getCell('B'.$i)->getValue();
}


$s.="</ol>";
print $s;