How can different browsers handle the downloading of PDF files generated with PHP?

Different browsers may handle the downloading of PDF files generated with PHP differently. To ensure a consistent experience for users, you can use the `header()` function in PHP to set the proper headers for the PDF file. This includes setting the content type to `application/pdf`, specifying the file name, and sending the file to the browser for download.

<?php
// Generate PDF content here

// Set headers for PDF download
header('Content-Type: application/pdf');
header('Content-Disposition: attachment; filename="example.pdf"');

// Output the PDF content
// Note: Replace 'example.pdf' with the actual file name
readfile('example.pdf');
exit;
?>