What are the best practices for handling PDF files in PHP scripts while bypassing username and password prompts?

When handling PDF files in PHP scripts, one common issue is bypassing username and password prompts that may be required to access the PDF file. To solve this, you can use PHP libraries like FPDI or TCPDF to programmatically access and manipulate PDF files without the need for manual authentication.

<?php

require_once('fpdf/fpdf.php');
require_once('fpdi/fpdi.php');

$pdf = new FPDI();
$pageCount = $pdf->setSourceFile('example.pdf');

for ($pageNum = 1; $pageNum <= $pageCount; $pageNum++) {
    $templateId = $pdf->importPage($pageNum);
    $pdf->addPage();
    $pdf->useTemplate($templateId);
}

$pdf->Output('output.pdf', 'D');

?>