(PHP Extension) Get Certificate Subject Part by Name or OID

Demonstrates the GetSubjectPart method where a name or OID can be passed.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?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");

$cert = new CkCert();

$success = $cert->LoadByCommonName('myCert');
if ($success == false) {
    print $cert->lastErrorText() . "\n";
    exit;
}

// This example demonstrates getting the SERIALNUMBER part of the subject,
// if one such part exists in the cert's subject.
// Not too many certicates include the serial number in the Subject.
// (Chilean issued certificates for SII is one such case where the SERIALNUMBER part exists within the Subject.)
$serialNum = $cert->getSubjectPart('SERIALNUMBER');
if ($cert->get_LastMethodSuccess() == false) {
    print 'No SERIALNUMBER part exists.' . "\n";
    exit;
}

print $serialNum . "\n";

// We could also get the part by the OID.
// See https://oidref.com/2.5.4.5 for a list of OID's in the 2.5.4.* range..
// The OID for SERIALNUMBER is "2.5.4.5"
$serialNum = $cert->getSubjectPart('2.5.4.5');
if ($cert->get_LastMethodSuccess() == false) {
    print 'No SERIALNUMBER part exists.' . "\n";
    exit;
}

print $serialNum . "\n";

?>