(PHP ActiveX) Get Issuer Certificate Information

See more Certificates Examples

A certificate contains information about its issuer. This example demonstrates how to get the issuer information from a certificate.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Cert')
$cert = new COM("Chilkat.Cert");

$success = $cert->LoadFromFile('qa_data/certs/sample.cer');
if ($success == 0) {
    print $cert->LastErrorText . "\n";
    exit;
}

// Get issuer information:

// -----------------------------------------------------------------------
// (Not all subject fields may exist depending on the issuer certificate.)
// -----------------------------------------------------------------------

// Issuer DN (Distinguished Name, i.e. all the Issuer subject parts)
print 'DN: ' . $cert->IssuerDN . "\n";

// Common Subject parts:
// Issuer Common Name
print 'CN: ' . $cert->IssuerCN . "\n";

// Issuer Country
print 'C: ' . $cert->IssuerC . "\n";

// Issuer Email address
print 'E: ' . $cert->IssuerE . "\n";

// Issuer Locality
print 'L: ' . $cert->IssuerL . "\n";

// Issuer Organization
print 'O: ' . $cert->IssuerO . "\n";

// Issuer Organizational Unit
print 'OU: ' . $cert->IssuerOU . "\n";

// Issuer State
print 'S: ' . $cert->IssuerS . "\n";

?>