如何在 PHP 中强制从远程存储下载文件？

Forcing File Downloads in PHP with Remote File Storage

To add a "Download this File" feature to a website while preventing direct playback in the browser, consider the following PHP solution:

// Locate the remote file.
$file_name = 'file.avi';
$file_url = 'http://www.myremoteserver.com/' . $file_name;

// Configure the download settings.
header('Content-Type: application/octet-stream');
header('Content-Transfer-Encoding: Binary');
header('Content-disposition: attachment; filename="' . $file_name . '"');

// Download the remote file content.
readfile($file_url);

// Ensure no output follows the download.
exit;

First, the PHP script locates the remote file and sets up the necessary HTTP headers to force a download instead of playback.

The script uses the readfile() function to retrieve the remote file's content. Note that the fopen_wrappers setting must be enabled for PHP to read remote URLs.

Finally, the script exits to prevent any further output that could interfere with the download process.

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