phpexel 이그나이터 점점 오류

이 링크에 설명 된대로 내가 모든 것을 얻을 : http://img11.imageshack.us/img11/7017/errorfzh.jpg phpexel 이그나이터 점점 오류

그리고 내 컨트롤러 :

(튜토리얼 나는 사이트에서 예를 사용) http://www.ahowto.net/php/easily-integrateload-phpexcel-into-codeigniter-framework, 하지만 난 내 엑셀 파일이있어

class Mail extends CI_Controller { 
    public function __construct(){ 
     parent::__construct(); 
     $this->load->library(array('form_validation', 'excel')); 
     //activate worksheet number 1 
     $this->excel->setActiveSheetIndex(0); 
     //name the worksheet 
     $this->excel->getActiveSheet()->setTitle('test worksheet'); 
     //set cell A1 content with some text 
     $this->excel->getActiveSheet()->setCellValue('A1', 'This is just some text value'); 
     //change the font size 
     $this->excel->getActiveSheet()->getStyle('A1')->getFont()->setSize(20); 
     //make the font become bold 
     $this->excel->getActiveSheet()->getStyle('A1')->getFont()->setBold(true); 
     //merge cell A1 until D1 
     $this->excel->getActiveSheet()->mergeCells('A1:D1'); 
     //set aligment to center for that merged cell (A1 to D1) 
     $this->excel->getActiveSheet()->getStyle('A1')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER); 

     $filename='just_some_random_name.xls'; //save our workbook as this file name 
     header('Content-Type: application/vnd.ms-excel'); //mime type 
     header('Content-Disposition: attachment;filename="'.$filename.'"'); //tell browser what's the file name 
     header('Cache-Control: max-age=0'); //no cache 

     //save it to Excel5 format (excel 2003 .XLS file), change this to 'Excel2007' (and adjust the filename extension, also the header mime type) 
     //if you want to save it as .XLSX Excel 2007 format 
     $objWriter = PHPExcel_IOFactory::createWriter($this->excel, 'Excel5'); 
     //force user to download the Excel file without writing it to server's HD 
     $objWriter->save('php://output'); 
    } 
}

감사합니다.

출처

2013-01-11 Bumblebee989