Several Signatures
This demo shows you how to add more than one signature. This is simply done by restarting the whole process and use a new signature field.
PHP
<?php
// load and register the autoload function
require_once __DIR__ . '/../../../../../bootstrap.php';
// create a temporary writer
$tempWriter = new \SetaPDF_Core_Writer_String();
$document = \SetaPDF_Core_Document::loadByFilename(
$assetsDirectory . '/pdfs/camtown/Laboratory-Report.pdf',
$tempWriter
);
// create a signer instance
$signer = new \SetaPDF_Signer($document);
// add a signature field
$field = $signer->addSignatureField();
// and define that you want to use this field
$signer->setSignatureFieldName($field->getQualifiedName());
$certificatePath = $assetsDirectory . '/certificates/setapdf-no-pw.pem';
// now create a signature module
$module = new \SetaPDF_Signer_Signature_Module_Pades();
// pass the path to the certificate
$module->setCertificate('file://' . $certificatePath);
$module->setPrivateKey('file://' . $certificatePath, '');
// sign the document with the module
$signer->sign($module);
// now simply re-start the process
// create the final writer
$writer = new \SetaPDF_Core_Writer_Http('several-signatures.pdf');
// create a new document instance based on the temporary result
$document = \SetaPDF_Core_Document::loadByString($tempWriter, $writer);
// create a signer instance
$signer = new \SetaPDF_Signer($document);
// add a signature field
$field = $signer->addSignatureField();
// and define that you want to use this field
$signer->setSignatureFieldName($field->getQualifiedName());
$certificatePath = $assetsDirectory . '/certificates/setapdf-no-pw.pem';
// now create a signature module
$module = new \SetaPDF_Signer_Signature_Module_Pades();
// pass the path to the certificate
$module->setCertificate('file://' . $certificatePath);
$module->setPrivateKey('file://' . $certificatePath, '');
// sign the document and send the final document to the initial writer
$signer->sign($module);