PHP

Use a PFX TLS Client Certificate

Demonstrates the Chilkat MailMan.SetSslClientCertPfx method, which sets the client-side certificate for SSL/TLS connections, loading it from a PFX/PKCS#12 file. The first argument is the path to the PFX file and the second is its password. This example loads a client certificate directly from a PFX.

Background: This is the convenience form of SetSslClientCert: rather than loading a Cert object first, you point straight at the PFX file and password. A PFX (PKCS#12) bundles the certificate with its private key — exactly what mutual TLS requires, since the client must prove possession of the key during the handshake. It is the usual client-credential format on Windows.

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<?php

use Chilkat2\MailMan;

$success = false;

// Demonstrates the MailMan.SetSslClientCertPfx method, which sets the client-side
// certificate for SSL/TLS connections, loading it from a PFX/PKCS#12 file.  The 1st argument
// is the PFX path and the 2nd is the PFX password.

$mailman = new MailMan();

// Configure the SMTP server connection.
$mailman->SmtpHost = 'smtp.example.com';
$mailman->SmtpPort = 465;
$mailman->SmtpSsl = true;
$mailman->SmtpUsername = 'user@example.com';
$mailman->SmtpPassword = 'myPassword';

// Load the client certificate directly from a PFX file.
try {
    $mailman->SetSslClientCertPfx('qa_data/certs/client.pfx', 'pfx_password');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

$success = $mailman->VerifySmtpLogin();
if (!$success) {
    echo $mailman->LastErrorText, "\n";
    exit;
}

echo "Connected using a PFX TLS client certificate.\n";

// Note: The path "qa_data/certs/client.pfx" is a relative local filesystem path,
// relative to the current working directory of the running application.