Is it possible to add a signature field in a pdf document using PHP? I do not have a digital sign document. I add only the signature field.

Question

I need to create a PDF document and add a "signature field".

Signature field is a field that allows a third-party service to sign a document digitally.

Is it possible to do this in open source PHP?

I saw https://manuals.setasign.com/setapdf-signer-manual/create-a-signature-field/ .

I am trying to use tcpdf, but I have no success.

Thanks.