(PHP Extension) Load Base64-encoded X.509 Certificate (.cer)

Loads a digital certificate from a base64 encoded DER X.509 Certificate (.cer, .crt) and fetches information about the cert.

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();

//  LoadFromFile will load virtually any certificate format file.
//  It will auto-recognize the format and load appropiately.
//  A base64-encoded DER X.509 certificate file
//  contains the binary DER in base64 encoded form.
//  Therefore, it is a text file that will begin like this:
//  -----BEGIN CERTIFICATE-----
//  MIIFbjCCBFagAwIBAgIGdDPNv/L0MA0GCSqGSIb3DQEBBQUAMIHKMQswCQYDVQQG
//  EwJVUzEQMA4GA1UECBMHQXJpem9uYTETMBEGA1UEBxMKU2NvdHRzZGFsZTEaMBgG
//  ...

$success = $cert->LoadFromFile('/Users/chilkat/testData/cer/chilkat_base64.cer');
if ($success != true) {
    print $cert->lastErrorText() . "\n";
    exit;
}

//  DN = "Distinguished Name"
print 'SubjectDN:' . $cert->subjectDN() . "\n";

print 'Common Name:' . $cert->subjectCN() . "\n";
print 'Issuer Common Name:' . $cert->issuerCN() . "\n";

print 'Serial Number:' . $cert->serialNumber() . "\n";

?>