Add a Signature on Desktop using PDFfiller PHP Client

Securely add legally binding eSignatures to your PDF documents using PDFfiller. Type, draw, capture your signature or add it using your mobile device. The app allows you to easily sign a PDF from a desktop, on any browser.
          
              
                    PDFfiller\OAuth2\Client\Provider\Document::createConstructor();

$document = Document::one($provider, 12345678);

$hashDocument = $document->createConstructor();