How can PHP be used to route PDF files and allow them to be accessed through a browser for printing?

To route PDF files and allow them to be accessed through a browser for printing, you can use PHP to create a script that reads the PDF file and outputs it to the browser with the appropriate headers. This will allow the PDF file to be displayed in the browser and printed using the browser's built-in functionality.

<?php

$file = 'path/to/your/pdf/file.pdf';

if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/pdf');
    header('Content-Disposition: inline; filename="' . basename($file) . '"');
    header('Content-Length: ' . filesize($file));
    readfile($file);
    exit;
} else {
    echo 'File not found.';
}

?>