How can debugging tools like Firebug be utilized to troubleshoot issues related to PDF file streaming in PHP and determine the root cause of the problem?

When troubleshooting PDF file streaming issues in PHP, debugging tools like Firebug can be utilized to inspect the HTTP response headers and content. This can help identify any errors or misconfigurations in the PHP code that may be causing the problem. By analyzing the response data in Firebug, developers can determine the root cause of the issue and make necessary adjustments to ensure the PDF file is streamed correctly.

<?php
// Set the content type header to application/pdf
header('Content-Type: application/pdf');

// Set the Content-Disposition header to inline to display the PDF in the browser
header('Content-Disposition: inline; filename="example.pdf"');

// Read and output the PDF file
readfile('path/to/example.pdf');
?>