Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(PHP Extension) PDF Sign Unsigned Signature FieldSee more PDF Signatures ExamplesDemonstrates how to sign a PDF's unsigned signature field. Note: This example requires Chilkat v9.5.0.85 or greater.
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $pdf = new CkPdf(); // Load a PDF containing an unsigned signature field. $success = $pdf->LoadFile('qa_data/pdf/unsigned_sig_field/due_diligence.pdf'); if ($success == false) { print $pdf->lastErrorText() . "\n"; exit; } // A PDF with an unsigned signature field appears in Adobe Acrobat as shown below. // (When the mouse pointer is hovered over the field, a tooltip will likely show a message // such as "Unsigned signature field (Click to sign)". // This example code will automatically find the unsigned signature field, // and signs using your certificate. It automatically sizes the text to the space alotted // for the signature. // Options for signing are specified in JSON. $json = new CkJsonObject(); // In most cases, the signingCertificateV2 and signingTime attributes are required. $json->UpdateInt('signingCertificateV2',1); $json->UpdateInt('signingTime',1); // We don't specify the page or a specific location because Chilkat will automatically // find the unsigned signature field and use its location and size and will scale the // signatures visual appearance (text + graphics) to the correct size required to fit. // We only need to indicate the desire to fill the unsigned signature field. $json->UpdateBool('appearance.fillUnsignedSignatureField',true); // Starting in Chilkat v9.5.0.90, if a PDF contains multiple unsigned signature fields, // the field to be signed can be chosen by name: // To list unsigned signature fields, see this example: List PDF Unsigned Signature Fields $json->UpdateString('unsignedSignatureField','doctor_signature'); // Note: If the PDF document contains multiple unsigned signature fields, Chilkat will // sign the 1st one found. // In this example, the appearance of the digital signature will contain three lines: // 1) The signing certificate's common name // 2) The current date/time // 3) Some arbitrary text. // The keyword "cert_cn" is replaced with the Certificate's Subject Common Name. // The keyword "current_dt" is replaced with the current date/time. // Any number of appearance text lines can be added. $json->UpdateString('appearance.text[0]','Digitally signed by: cert_cn'); $json->UpdateString('appearance.text[1]','current_dt'); $json->UpdateString('appearance.text[2]','The crazy brown fox jumps over the lazy dog.'); // This signature will include one of the built-in SVG graphics (green-check-grey-circle). $json->UpdateString('appearance.image','green-check-grey-circle'); $json->UpdateString('appearance.imagePlacement','left'); // Load the signing certificate. (Use your own certificate.) $cert = new CkCert(); $success = $cert->LoadPfxFile('qa_data/pfx/myPdfSigningCert.pfx','secret'); if ($success == false) { print $cert->lastErrorText() . "\n"; exit; } // Tell the pdf object to use the certificate for signing. $success = $pdf->SetSigningCert($cert); if ($success == false) { print $pdf->lastErrorText() . "\n"; exit; } $success = $pdf->SignPdf($json,'qa_output/due_diligence_signed.pdf'); if ($success == false) { print $pdf->lastErrorText() . "\n"; exit; } print 'The PDF has been successfully cryptographically signed.' . "\n"; // The appearance of the signature appears in Adobe Acrobat as shown below. ?> |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.