zend gdata and google spreadsheet not connecting

Question

ive been using Zend Gdata for a while now, and today im getting an error of

Notice: Undefined offset: ClientLogin.php on line 150

via php, this has been working for a while now, and today without changing anything it stopped working, im guessing some deprecated service on behalf of google with the zend gdata maybe the Zend_Gdata_ClientLogin::getHttpClient( ) method or something, can any one confirm or help me with this issue. the code im using to connect is as follows:

    require_once('Zend/Loader.php');
Zend_Loader::loadClass('Zend_Gdata');
Zend_Loader::loadClass('Zend_Gdata_ClientLogin');
Zend_Loader::loadClass('Zend_Gdata_Docs');
Zend_Loader::loadClass('Zend_Gdata_Spreadsheets');
require_once 'Zend/Gdata.php';
require_once 'Zend/Gdata/AuthSub.php';
require_once 'Zend/Gdata/Spreadsheets.php';
require_once 'Zend/Gdata/Spreadsheets/DocumentQuery.php';
require_once 'Zend/Gdata/Spreadsheets/ListQuery.php';
require_once 'Zend/Loader.php';


$sourceUser = "myemail";
$sourcePass = "mysuperawesomepassword";
$service = Zend_Gdata_Spreadsheets::AUTH_SERVICE_NAME;
$sourceClient = Zend_Gdata_ClientLogin::getHttpClient($sourceUser, $sourcePass, $service);
$connection = new Zend_Gdata_Spreadsheets($sourceClient);

i am using the zend gdata with the google spreadsheets

also the error points specifically to this line

$sourceClient = Zend_Gdata_ClientLogin::getHttpClient($sourceUser, $sourcePass, $service);

as i said, i was using this for a while now, and nothing has changed on my end

Answer 1

I uses ClientLogin for a server to server application.

needed to switch to oAuth2 in a hurry today. I merged some examples I found to get the authorisation token using a 'Service account'

function get_token() {
$client_email = '0-1.apps.googleusercontent.com';
$client_email = '[email protected]';
$private_key = file_get_contents('abc.p12');
$scopes = array('https://spreadsheets.google.com/feeds');
$credentials = new Google_Auth_AssertionCredentials(
    $client_email,
    $scopes,
    $private_key,
    'notasecret',                                 // Default P12 password
    'http://oauth.net/grant_type/jwt/1.0/bearer' // Default grant type
);

$client = new Google_Client();
$client->setAssertionCredentials($credentials);
if ($client->getAuth()->isAccessTokenExpired()) {
 $client->getAuth()->refreshTokenWithAssertion();
}
 $tokenData = json_decode($client->getAccessToken());
        return $tokenData->access_token;
}

I needed to use the developer email not the app email, same email must be added as a user to the spreadsheet

the generated token can then be used with php-google-spreadsheet-client

$accessToken = get_token();

$serviceRequest = new DefaultServiceRequest($accessToken);
ServiceRequestFactory::setInstance($serviceRequest);

$spreadsheetService = new Google\Spreadsheet\SpreadsheetService();
$spreadsheetFeed = $spreadsheetService->getSpreadsheets();

$spreadsheet = $spreadsheetFeed->getByTitle('Hello World');