用于下载文件php的标题

Question

可能重复:
php,文件下载

我有不在Web根目录中的文件,我需要提供下载.所以我有一个脚本,使用下面的代码来下载所请求的文件.问题是,我下载的每个文件都已损坏？文件没问题,因为如果我使用FTP下载,它们会打开.这是传递的标题:

header($_SERVER["SERVER_PROTOCOL"] . " 200 OK");
        header("Cache-Control: public"); // needed for i.e.
        header("Content-Type: " . $download[0]['mime']);
        header("Content-Disposition: attachment; filename=" .$download_file);
        header("Content-Transfer-Encoding: Binary");
        header("Content-Length:".filesize($attachment_location));

        readfile($attachment_location);

Answer 1

以下是用于此的标头示例:http:
//php.net/manual/en/function.readfile.php

    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename($file));
    header('Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));