PHP

PDF List Unsigned Signature Fields

See more PDF Signatures Examples

Demonstrates how to list the unsigned signature fields in a PDF.

Note: This example requires Chilkat v9.5.0.90 or greater.

Chilkat2 PHP

<?php

use Chilkat2\JsonObject;
use Chilkat2\Pdf;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$pdf = new Pdf();

// Load a PDF containing 2 remaining unsigned signature fields:
try {
    $pdf->LoadFile('qa_data/pdf/doctor_patient_parent.pdf');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Note: This example requires Chilkat v9.5.0.90 or greater.
$json = new JsonObject();
$pdf->GetUnsignedSigFields($json);

$json->EmitCompact = false;
echo $json->Emit(), "\n";

// Result:
// {
//   "unsignedSigField": [
//     "doctor_signature",
//     "parent_signature"
//   ]
// }

// To iterate over the field names:
$strVal = '';

$i = 0;
$count_i = $json->SizeOfArray('unsignedSigField');
while ($i < $count_i) {
    $json->I = $i;
    $strVal = $json->StringOf('unsignedSigField[i]');
    echo $strVal, "\n";
    $i = $i + 1;
}