(PHP Extension) Extract XML File from a .p7m (e.g. FATTURA ELETTRONICA, ITALY)

PHP Extension example to extract the original file from a .p7m (Signed-Data PKCS7 Format) The .p7m contains the signed contents of the original file.

One use for this example is to extract the XML file from a Fattura Elettronica .p7m signature.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MAC OS X, Alpine Linux, Solaris, OpenBSD, FreeBSD, and Linux armhf/aarch64

<?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.

$crypt = new CkCrypt2();

$outputFile = 'testData/xml/original.xml';
$inFile = 'testData/p7m/fattura_signature.p7m';

// Verify the signature and extract the XML file.
$success = $crypt->VerifyP7M($inFile,$outputFile);
if ($success == false) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

print 'Success!' . "\n";

?>