php 利用phpexcel 导出数据

private function _export_data($data = array())
    {
        error_reporting(E_ALL); //开启错误
        set_time_limit(0); //脚本不超时
         
        date_default_timezone_set('Europe/London'); //设置时间
        /** Include path **/
        set_include_path(FCPATH.APPPATH.'/libraries/Classes/');//设置环境变量
        // Create new PHPExcel object
        Include 'PHPExcel.php';
        $objPHPExcel = new PHPExcel();
        // Set document properties
        $objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
                             ->setLastModifiedBy("Maarten Balliauw")
                             ->setTitle("Office 2007 XLSX Test Document")
                             ->setSubject("Office 2007 XLSX Test Document")
                             ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
                             ->setKeywords("office 2007 openxml php")
                             ->setCategory("Test result file");
        // Add some data
        $letter = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');                             
        if($data){
             $i = 1;
            foreach ($data as $key => $value) {
               $newobj =  $objPHPExcel->setActiveSheetIndex(0);
                $j = 0;    
                foreach ($value as $k => $val) {
                    
                    $index = $letter[$j]."$i";
                    $objPHPExcel->setActiveSheetIndex(0)->setCellValue($index, $val);
                    $j++;
                }
                    $i++;
            }
        }                        
        $date = date('Y-m-d',time());            
        // Rename worksheet
        $objPHPExcel->getActiveSheet()->setTitle($date);
        $objPHPExcel->setActiveSheetIndex(0);
        // Redirect output to a client’s web browser (Excel2007)
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header('Content-Disposition: attachment;filename="'.$date.'.xlsx"');
        header('Cache-Control: max-age=0');

        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
        $objWriter->save('php://output');
        exit;
    }

public function export_data($data = array())
    {
        # code...
        include_once(APP_PATH.'Tools/PHPExcel/Classes/PHPExcel/Writer/IWriter.php') ;
        include_once(APP_PATH.'Tools/PHPExcel/Classes/PHPExcel/Writer/Excel5.php') ;
        include_once(APP_PATH.'Tools/PHPExcel/Classes/PHPExcel.php') ;
        include_once(APP_PATH.'Tools/PHPExcel/Classes/PHPExcel/IOFactory.php') ;
        $obj_phpexcel = new PHPExcel();
        $obj_phpexcel->getActiveSheet()->setCellValue('a1','Key');
        $obj_phpexcel->getActiveSheet()->setCellValue('b1','Value');        
        if($data){
            $i =2;
            foreach ($data as $key => $value) {
                # code...
                $obj_phpexcel->getActiveSheet()->setCellValue('a'.$i,$value);
                $i++;
            }
        }    

        $obj_Writer = PHPExcel_IOFactory::createWriter($obj_phpexcel,'Excel5');
        $filename = "outexcel.xls";
        
        header("Content-Type: application/force-download"); 
        header("Content-Type: application/octet-stream"); 
        header("Content-Type: application/download"); 
        header('Content-Disposition:inline;filename="'.$filename.'"'); 
        header("Content-Transfer-Encoding: binary"); 
        header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); 
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); 
        header("Pragma: no-cache"); 
        $obj_Writer->save('php://output'); 
    }