php - 生成和下载 excel 文件会生成 ERR_INVALID_RESPONSE

Question

这是我的代码:

 public function downloadexcel($requestId) {
    $this->loadModel('MaterialsRequest');
    $materialsRequests = $this->MaterialsRequest->find('all', array('conditions' => array('MaterialsRequest.request_id' => $requestId)));
    date_default_timezone_set('Europe/London');

    if (PHP_SAPI == 'cli')
        die('This example should only be run from a Web Browser');

    /** Include PHPExcel */
    //require_once dirname(__FILE__) . '/../Classes/PHPExcel.php';
    // Create new PHPExcel object
    $objPHPExcel = new PHPExcel();

    // Set document properties
    $objPHPExcel->getProperties()->setCreator("mez")
            ->setLastModifiedBy("mez")
            ->setTitle("Supply Template")
            ->setSubject("Supply Template")
            ->setDescription("Supply Template , please fill and upload.")
            ->setKeywords("office 2007 openxml php")
            ->setCategory("Supply");




    $objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(10);
    $objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(40);
    $objPHPExcel->getActiveSheet()->getColumnDimension('C')->setWidth(30);
    $objPHPExcel->getActiveSheet()->getColumnDimension('D')->setWidth(30);
    $objPHPExcel->getActiveSheet()->getStyle('A')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_LEFT);
    $objPHPExcel->getActiveSheet()->getStyle('B')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::VERTICAL_CENTER);
    $objPHPExcel->getActiveSheet()->getStyle('C')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::VERTICAL_CENTER);
    $objPHPExcel->getActiveSheet()->getStyle('D')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::VERTICAL_CENTER);

    // Add some data
    $objPHPExcel->setActiveSheetIndex(0)
            ->setCellValue('A1', 'Material ID')
            ->setCellValue('B1', 'Material Name')
            ->setCellValue('C1', 'Quantity')
            ->setCellValue('D1', 'Your offer');


    $index = 2;
    foreach ($materialsRequests as $oneMaterialsRequests) {

        $objPHPExcel->setActiveSheetIndex(0)
                ->setCellValue('A' . $index, $oneMaterialsRequests['MaterialsRequest']['material_id'])
                ->setCellValue('B' . $index, $oneMaterialsRequests['Material']['name'])
                ->setCellValue('C' . $index, $oneMaterialsRequests['MaterialsRequest']['qty'])
                ->setCellValue('E' . $index, $oneMaterialsRequests['MaterialsRequest']['id']);


        $index++;
    }

    /// Set sheet security
    $MaterialsRequestsNo = count($materialsRequests);
    $MaterialsRequestsNo+=1; //add count for header
    $objPHPExcel->getActiveSheet()->getProtection()->setSheet(true);
    $objPHPExcel->getActiveSheet()
            ->getStyle('D2:D' . $MaterialsRequestsNo)
            ->getProtection()->setLocked(
            PHPExcel_Style_Protection::PROTECTION_UNPROTECTED
    );


    // Miscellaneous glyphs, UTF-8
    // Rename worksheet
    $objPHPExcel->getActiveSheet()->setTitle('Supply');


    // Set active sheet index to the first sheet, so Excel opens this as the first sheet
    $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="Supply.xlsx"');
    header('Cache-Control: max-age=0');
    // If you're serving to IE 9, then the following may be needed
    header('Cache-Control: max-age=1');

    // If you're serving to IE over SSL, then the following may be needed
    header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
    header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); // always modified
    header('Cache-Control: cache, must-revalidate');// HTTP/1.1
    header('Pragma: public'); // HTTP/1.0

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

    exit;
}

当我调用这个函数时，我可以从我在 lamp 上运行的本地服务器获取 excel 工作表，并且网页会在我调用该函数后关闭，但是当我调用它时，在我的 apache 服务器上它会出现错误: ERR_INVALID_RESPONSE，我检查了放置骰子的代码()；在每一行之后看看它会如何响应，直到在 $objWriter=PHPExcel_IOFactory::createWriter($objPHPExcel,'Excel2007'); 之后放置一个 die(); 它会下载电子表格，但它会已损坏，不会关闭页面，也不会显示该错误消息，但显然 $objWriter->save('php://output'); 导致错误出现，页面将卡住并且无法下载 excel 文件。

我正在调试别人的代码，但我无法弄清楚这部分。

Answer 1

最终问题出现在 ZipArchive 类中，这就是为什么它在一台服务器上工作而在另一台服务器上不工作的原因。

此处提供更多文档:http://www.php.net/manual/en/zip.installation.php