What are common issues encountered when configuring "powerdownload -pdl3" from powerscripts.org in PHP?

One common issue encountered when configuring "powerdownload -pdl3" from powerscripts.org in PHP is that the download may not start or may be interrupted due to incorrect headers being sent. To solve this, make sure to set the correct content type and headers before outputting the file.

<?php
$file = 'example.pdf';
$filename = 'downloaded_file.pdf';

header('Content-Type: application/pdf');
header('Content-Disposition: attachment; filename="' . $filename . '"');
readfile($file);
exit;
?>