(PHP Extension) Find Certificate for Email Address in Current-User Certificate Store (Windows-Only)

This is a Windows-only example to find a certificate for a given email address in the current-user certificate store (located in the Windows Registry).

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");

// This is a Windows-only example because it lists the certificates
// stored in the Windows Current User Certificate Store located in the
// Windows Registry.

$certStore = new CkCertStore();

$readOnly = true;
$success = $certStore->OpenCurrentUserStore($readOnly);
if ($success == false) {
    print $certStore->lastErrorText() . "\n";
    exit;
}

$emailAddr = 'support@chilkatsoft.com';
// cert is a CkCert
$cert = $certStore->FindCertBySubjectE($emailAddr);
if ($certStore->get_LastMethodSuccess() != true) {
    print 'No certificate found for ' . $emailAddr . "\n";
    exit;
}

print 'Found: ' . $cert->subjectDN() . "\n";

// It should be case-insensitive, however it was found not to be.
// The case-insensitive search is fixed starting in Chilkat v9.5.0.65.
$emailAddr = 'SUPPORT@chilkatsoft.com';
// cert is a CkCert
$cert = $certStore->FindCertBySubjectE($emailAddr);
if ($certStore->get_LastMethodSuccess() != true) {
    print 'No certificate found for ' . $emailAddr . "\n";
    exit;
}

print 'Found: ' . $cert->subjectDN() . "\n";


?>