Protect Document with a PIN Using the PDFfiller PHP Client

Effectively protect your document with a PIN using the PDFfiller PHP Client. Secure your PDFs with 2-factor authentication, encrypted folders and HIPAA compliance.
Try PDFfiller API for FREE!
Fill out this form to try all the benefits of using PDFfiller API. The free API key allows you to get a feel for the PDFfiller experience before buying a subscription plan. If you have any questions follow the link below to contact our 24/7 support team.
Apply for a free API key

Protect PDFs with a PIN

Secure recipients' access to documents with a 4-digit PIN using the PDFfiller PHP Client. Make sure your sensitive information is kept in a secure place. Share your PDFs with trustful partners and customers.

How to Use PDFfiller PHP Client

Signature Request

Create signature request (with form authentication)
PDFfiller\OAuth2\Client\Provider\SignatureRequest::save();
View on GitHub


$s2s = new SignatureRequest($provider);
$s2s->document_id = 20809416;

$s2s->method = new SignatureRequestMethod(SignatureRequestMethod::SEND_TO_EACH);
$s2s->envelope_name = 'Title';
$s2s->pin = "1464";

$s2s->security_pin = new SignatureRequestSecurityPin(SignatureRequestSecurityPin::ENHANCED);
$s2s->recipients[] = new SignatureRequestRecipient($provider, [
    'email' => 'sergijlys@gmail.com',
    'name' => 'Test user',
    'access' => 'full',
    'require_photo' => false,
    'message_subject' => 'subject',
    'message_text' => 'message',
    "phone_authenticate" => "+380132137475",
    'additional_documents' => [
        'doc1'
    ]
]);

$result = $s2s->save();

Try protecting your document with 2-Factor authentication using the PDFfiller PHP Client

Protect your account, a folder or a PDF form by adding 2-factor authentication just like your bank account using the PDFfiller PHP Client.

Try requiring filler's email and name using the PDFfiller PHP Client

Require the name and email of anyone filling out a document using the PDFfiller PHP Client.

Try setting a unique document ID for each document using the PDFfiller PHP Client

Secure the authenticity of the document with the help of a unique Document ID using the PDFfiller PHP Client. Provide a strong ID for each PDF that contains an important and confidential information.
Languages We Support