(PHP Extension) Subject Alternative Name

Demonstrates the usage of the SubjectAlternativeName property to get the certificate SAN (subject alternative name) as XML.

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");

// Note: Not all certificates contain a Subject Alternative Name.
// If it does not, the SubjectAlternativeName property will contain the empty string.

$cert = new CkCert();

$success = $cert->LoadFromFile('qa_data/certs/testIcpBrasil.cer');
if ($success == false) {
    print $cert->lastErrorText() . "\n";
    exit;
}

$subjectAltNameXml = $cert->subjectAlternativeName();

print $subjectAltNameXml . "\n";

// Here's a sample of the subjectAltNameXml:

// <?xml version="1.0" encoding="utf-8"?>
// <SubjectAltName>
//     <name type="oid" oid="2.16.76.1.3.4">...</name>
//     <name type="oid" oid="2.16.76.1.3.2">...</name>
//     <name type="oid" oid="2.16.76.1.3.3">...</name>
//     <name type="oid" oid="2.16.76.1.3.7">...</name>
//     <rfc822Name>...</rfc822Name>
// </SubjectAltName>

// The XML can be parsed like this:

$xml = new CkXml();

$xml->LoadXml($subjectAltNameXml);

$i = 0;
$count_i = $xml->NumChildrenHavingTag('name');
while ($i < $count_i) {
    $xml->put_I($i);
    $oid = $xml->chilkatPath('name[i]|(oid)');
    $name = $xml->getChildContent('name[i]');
    $i = $i + 1;
}

$rfc822Name = $xml->getChildContent('rfc822Name');

?>