Sign a PDF created with FPDF

Miscellaneous

The german original can be downloaded from here.

This demo shows a signature process of a PDF document created with FPDF.

<?php
require_once('fpdf.php');

// create an instancer of FPDF
$pdf = new fpdf();
$pdf->AddPage();
$pdf->SetFont('Arial', 'B', 14);

// let's write some dynamic content
$text = 'This document is created with FPDF on '
      . date('r')
      . ' and digital signed with the SetaPDF-Signer API.';
$pdf->MultiCell(0, 8, $text);

// require the OpenSSL signing module
require_once("Signer/Module/OpenSsl.php");

// create an instance
$module = new SetaPDF_Signer_Module_OpenSsl();

// set the properties of the module
$module->setSignCert(file_get_contents('certificate.pem'));
$module->setPrivateKey(array(
    file_get_contents('private-key.pem'),
    'password'
));

// require the SetaPDF_Signer class
require_once("Signer/SetaPDF_Signer.php");

// create a SetaPDF_Signer object
$signer = new SetaPDF_Signer();
// set the temporary directory to the standard value
$signer->setTmpDirectory();

// fetch a temporary name
$tmpFileName = $signer->createNewTmpFileName();
// Output the PDF document to the temporary file
$pdf->Output($tmpFileName, 'F');

// Set the FPDF output as the sourcefile
$signer->setSourceFileName($tmpFileName);

// set some signature properties
$signer->setReason("Demo with FPDF");
$signer->setLocation('www.setasign.de');

// sign the document and send it to the client
$res = $signer->sign($module, 'signed.pdf', 'D');
if (SetaPDF::isError($res)) // check for errors
    var_dump($res);

PHP & PDF Solutions

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Miscellaneous

Sign a PDF created with FPDF