How can PHP headers be used to force a download of webpage content as an attachment?

To force a download of webpage content as an attachment using PHP headers, you can set the Content-Disposition header to "attachment" and specify the filename for the downloaded file. This will prompt the browser to download the content as a file attachment instead of displaying it in the browser window.

<?php
// Set the content type and filename for download
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="downloaded-file.txt"');

// Output the content that you want to force download
echo "This is the content that will be downloaded as a file.";
?>