(PHP ActiveX) Get Google API Access Token using P12 Service Account Key

Demonstrates how to get a Google API access token using a P12 service account key.

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

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// First load the PKCS12 (.p12 / .pfx) into a PFX object.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Pfx')
$pfx = new COM("Chilkat.Pfx");
$success = $pfx->LoadPfxFile('qa_data/googleSvcAccountKeys/ChilkatCloud-6ba1b17d6d16.p12','notasecret');
if ($success != 1) {
    print $pfx->LastErrorText . "\n";
    exit;
}

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.AuthGoogle')
$gAuth = new COM("Chilkat.AuthGoogle");
$success = $gAuth->SetP12($pfx);

// Set the client email address.
$gAuth->EmailAddress = 'pip-563@chilkatcloud.iam.gserviceaccount.com';

// Choose a scope.
$gAuth->Scope = 'https://www.googleapis.com/auth/cloud-platform';

// Request an access token that is valid for this many seconds.
$gAuth->ExpireNumSeconds = 3600;

// If the application is requesting delegated access:
// The email address of the user for which the application is requesting delegated access,
// then set the email address here. (Otherwise leave it empty.)
$gAuth->SubEmailAddress = '';

// Connect to www.googleapis.com using TLS (TLS 1.2 is the default.)
// The Chilkat socket object is used so that the connection can be established
// through proxies or an SSH tunnel if desired.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Socket')
$tlsSock = new COM("Chilkat.Socket");
$success = $tlsSock->Connect('www.googleapis.com',443,1,5000);
if ($success != 1) {
    print $tlsSock->LastErrorText . "\n";
    exit;
}

// Send the request to obtain the access token.
$success = $gAuth->ObtainAccessToken($tlsSock);
if ($success != 1) {
    print $gAuth->LastErrorText . "\n";
    exit;
}

// Examine the access token:
print 'Access Token: ' . $gAuth->AccessToken . "\n";

?>