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我想通过 PHP 从我的服务器下载 PDF,该 PDF 也是通过 PDF 上传的。虽然它适用于某些文件,但我收到以下有关单个文件的错误消息:

ERR_CONTENT_LENGTH_MISMATCH

这是我的下载功能:

if($_GET['funktion'] == 'downloadallgemein')
 {

        $filename = basename($dateiname);
        $path = '/kunden/261105_71522/webseiten/dev.delst/uploads/'.$filename.''; // the file made available for download via this PHP file
        if (file_exists($path)) {
                $mm_type="application/octet-stream"; // modify accordingly to the file type of $path, but in most cases no need to do so

                header("Pragma: public");
                header("Expires: 0");
                header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
                header("Cache-Control: public");
                header("Content-Description: File Transfer");
                header("Content-Type: " . $mm_type);
                header("Content-Length: " .(string)(filesize($path)) );
                header('Content-Disposition: attachment; filename="'.basename($path).'"');
                header("Content-Transfer-Encoding: binary\n");

                readfile($path); // outputs the content of the file

                exit();
        }

        else
        echo'Datei wurde nicht auf dem Server gefunden';
 }  

如果我删除header("Content-Length: " .(string)(filesize($path)) ); 下载有效,但 PDF 文件随后损坏且无法打开。

路径正确,文件位于服务器上。所以上传工作..

我究竟做错了什么?

4

1 回答 1

0

header('Content-Type: application/pdf');

header('Content-Disposition: attachment; filename="' . basename($filename) . '"');

header('内容长度:' .filesize($filename));

读取文件($文件名);

我使用此标头在我的 php 文件中下载 pdf

于 2017-06-12T07:42:33.227 回答