Create and Add a Signature Field
This demo shows you how to create and add signature fields to a PDF document. If you do not create a field manually the SetaPDF-Signer component will create a field automatically for you.
PHP
<?php
// load and register the autoload function
require_once __DIR__ . '/../../../../../bootstrap.php';
$writer = new \SetaPDF_Core_Writer_Http('signature-fields.pdf');
$document = new \SetaPDF_Core_Document($writer);
// create an empty document with some pages
$pages = $document->getCatalog()->getPages();
$pages->create(\SetaPDF_Core_PageFormats::A4);
$pages->create(\SetaPDF_Core_PageFormats::A4, \SetaPDF_Core_PageFormats::ORIENTATION_LANDSCAPE);
// by default the signer component will add an invisible field. You can do this manually, this way:
$fieldA = \SetaPDF_Signer_SignatureField::add($document, 'MyInvisibleSignature');
// let's create a visible signature field through the field class
$fieldB = \SetaPDF_Signer_SignatureField::add(
$document,
'Signature',
1,
\SetaPDF_Signer_SignatureField::POSITION_LEFT_TOP,
[
'x' => 20,
'y' => -20
],
180,
50
);
// now create one with the same name and a fixed position
$fieldC = \SetaPDF_Signer_SignatureField::add(
$document,
'Signature',
1,
20,
$pages->getPage(1)->getHeight() - 90 /* prev. field */ - 50 /* height */,
180,
50
);
// you should know that the field was added but its name was updated:
//var_dump($fieldC->getQualifiedName() === 'Signature_1');
// the Signer instance itself comes with a proxy method with nearly the same method signature:
// create a signer instance
$signer = new \SetaPDF_Signer($document);
// adds a hidden field
$fieldD = $signer->addSignatureField('Signature');
// if you want to sign e.g. $fieldD later on, you need to pass its name to the signer component:
$signer->setSignatureFieldName($fieldD->getQualifiedName());
// add a visible signature field through the proxy method
$fieldE = $signer->addSignatureField(
'Signature',
2,
\SetaPDF_Signer_SignatureField::POSITION_LEFT_TOP,
[
'x' => 20,
'y' => -20
],
180,
50
);
//var_dump($fieldE->getQualifiedName() === 'Signature_3');
// if you want to sign e.g. $fieldE later on, you need to pass its name to the signer component:
//$signer->setSignatureFieldName($fieldE->getQualifiedName());
$document->save()->finish();