我想生成2个excel文件供用户下载：一个成功但另一个不成功

Question

我有这段代码：

<?php require_once '../include/Classes/PHPExcel.php' ?>
<?php require_once '../include/Classes/PHPExcel/IOFactory.php' ?>
<?php require_once '../include/Classes/PHPExcel/Writer/Excel2007.php' ?>
$PHPExcel = new PHPExcel();
$reader = PHPExcel_IOFactory::createReader('Excel2007');
$PHPExcel = $reader->load("path");

............work on setting the excel

$PHPExcelWriter = PHPExcel_IOFactory::createWriter($PHPExcel, 'Excel2007');
$PHPExcelWriter->save($filename . '.xlsx');

$PHPExcel->disconnectWorksheets();
unset($PHPExcel);
if (file_exists($filename . '.xlsx')) {
    header('Content-Description: File Transfer');
    header('Content-Transfer-Encoding: binary');
    header("Content-Disposition: attachment;filename=\"$filename.xlsx\"");
    header('Content-Type: application/vnd.ms-excel;charset=UTF-8;');
    header('Content-Length: ' . filesize($filename . '.xlsx'));
    header('Pragma: no-cache');
    header('Expires: 0');
    ob_clean();
    flush();
    @readfile($filename . '.xlsx');
    exit;
}

这个是成功的。用户可以将文件下载到那台计算机，但不仅将文件存储在localhost中。

if (isset($_POST['Export1']) && $_POST['Export1'] == 'Export to Excel') {
        $invoice_id = $_POST['invoice_id'];
        $invoice_date = $_POST['invoice_date'];
        $event_code = $_POST['event_code'];
        //$total_price = $_POST['total_price'];
        //$total_discount = $_POST['total_discount'];
        $total_amount = $_POST['total_amount'];
        $invoice_code = $_POST['invoice_code'];

        $bill_to = $_POST['bill_to'];
        $prog_sub = $_POST['prog_sub'];
        $temp_prog_sub = explode('-', $prog_sub);
        $program = $temp_prog_sub[0];
        $subject = $temp_prog_sub[1];
        $init_first_row = 15;

        $PHPExcel = new PHPExcel();
        $reader = PHPExcel_IOFactory::createReader('Excel2007');
        $PHPExcel = $reader->load("../include/Classes/Invoice_In-school.xlsx"); // sample is your file name 
        $PHPExcel->getProperties()->setCreator("Pathways");
        $PHPExcel->getProperties()->setTitle("In-School Invoice");

        $PHPExcel->setActiveSheetIndex(0);
        $PHPExcel->getActiveSheet()->setCellValue('D7', $bill_to);
        $PHPExcel->getActiveSheet()->setCellValue('AD7', $invoice_date);
        $PHPExcel->getActiveSheet()->setCellValue('AD9', $invoice_code); //place a invoice_code here
        $PHPExcel->getActiveSheet()->setCellValue('D12', $program . ' ' . $subject . '(' . $event_code . ')');
        //$PHPExcel->getActiveSheet()->setCellValue('K24', '$' .$total_price);
        //$PHPExcel->getActiveSheet()->setCellValue('Q24', '$' .$total_discount);
        $PHPExcel->getActiveSheet()->setCellValue('AD25', '$' . $total_amount);

        if (isset($_POST['activity_id'])) {
            for ($j = 0; $j < count($_POST['activity_id']); $j++) {
                $amount = $_POST['amount'][$j];
                $date = $_POST['date'][$j];
                $start_time = $_POST['start_time'][$j];
                $end_time = $_POST['end_time'][$j];

                (String) $date_col = 'A' . $init_first_row;
                (String) $time_col = 'N' . $init_first_row;
                (String) $amount_col = 'AD' . $init_first_row;

                $PHPExcel->getActiveSheet()->setCellValue((String) $date_col, $date); 
                $PHPExcel->getActiveSheet()->setCellValue((String) $time_col, $start_time . '-' . $end_time); 

                $PHPExcel->getActiveSheet()->setCellValue((String) $amount_col, '$' . $amount);

                $init_first_row++;
            }
        }
        if (isset($_POST['activity_id'])) {
            $no_of_act = count($_POST['activity_id']);
        } else {
            $no_of_act = 0;
        }
        $i = $_POST['i'];
        $i-=$no_of_act;
        for ($j = 0; $j < $i; $j++) {
            $j+=$no_of_act;
            $amount = $_POST['amount'][$j];
            $date = $_POST['date'][$j];
            $start_time = $_POST['start_time'][$j];
            $end_time = $_POST['end_time'][$j];

            (String) $date_col = 'A' . $init_first_row;
            (String) $time_col = 'N' . $init_first_row;
            (String) $amount_col = 'AD' . $init_first_row;

            $PHPExcel->getActiveSheet()->setCellValue((String) $date_col, $date); //date
            $PHPExcel->getActiveSheet()->setCellValue((String) $time_col, $start_time . '-' . $end_time); //time
            $PHPExcel->getActiveSheet()->setCellValue((String) $amount_col, '$' . $amount);

            $init_first_row++;
            $j-=$no_of_act;
        }
        //ob_start();
        $filename="XXXXX";
        $PHPExcelWriter = PHPExcel_IOFactory::createWriter($PHPExcel, 'Excel2007');
        $PHPExcelWriter->save($filename . '.xlsx');

        $PHPExcel->disconnectWorksheets();
        unset($PHPExcel);
        if (file_exists($filename . '.xlsx')) {
            header('Content-Description: File Transfer');
            header('Content-Transfer-Encoding: binary');
            header("Content-Disposition: attachment;filename=\"$invoice_code.xlsx\"");
            header('Content-type: application/octet-stream');
            //header('Content-Type: application/vnd.ms-excel;charset=UTF-8;');
            header('Content-Length: ' . filesize($filename . '.xlsx'));
            header('Pragma: no-cache');
            header('Expires: 0');
            ob_clean();
            flush();
            @readfile($filename . '.xlsx');
            exit;
        }
        echo("<script>location.href ='XXXXXXX.php';</script>");
    }

这一次失败了。输出这个：

PK��D$�Hp�[Content_Types].xml���N�0E�|E�-Jܲ@5��*Q>�ؓƪ_g���$R�v'J�=���&[k�5D�ޕlXXNz�ݢdo���e��S�x%����j4����KV��9GY�X���T>Z��1.xr)�o�[.�K�R�6�
...

失败的一个更复杂我试图使用ob_start（）;但不行。 请帮忙!!!!!!!!!