gmail oauth imap zend retrieve from gmail instead of session - zend-framework

Question

Im planning to use google oauth IMAP to sign up for my website.
Im using zend framework for the same.
http://code.google.com/p/google-mail-xoauth-tools/wiki/PhpSampleCode
Also im suing 3 legged approach to sign up
When i go through the sample threelegged.php.
I find that i t has email address inbox and he keeps it in a session and goes to access the gmail account and once he returns back he retireves the email id from the session
$email_address = $_SESSION['email_address'];
Line No.121
$config = new Zend_Oauth_Config();
$config->setOptions($options);
$config->setToken($accessToken);
$config->setRequestMethod('GET');
$url = 'https://mail.google.com/mail/b/' .
$email_address .
'/imap/';
My requirement is i do not want to have email address to be kept in session instead i want the given the gmail address to be retrieved in
$email address.
How can i do that ?
Is any function supporting it in Zend framework?

Answer 1

http://sites.google.com/site/oauthgoog/Home/emaildisplayscope
You will need to include the authorization url with your other urls you are asking permission to get data from:
https://www.googleapis.com/auth/userinfo.email
Then when you actually get the authorized token you can do it like this:
// Get access token from session after authorization process is complete.
$accessToken = unserialize($_SESSION['ACCESS_TOKEN']);
// Retrieve email address using Access Token
$erequest = $accessToken->getHttpClient($options);
$erequest->setUri('https://www.googleapis.com/userinfo/email');
$erequest->setMethod(Zend_Http_Client::GET);
$ereturn = $erequest->request();
parse_str($ereturn->getBody(), $earray);
$email_address = $earray['email'];
// Retrieve mail using Access Token
$config = new Zend_Oauth_Config();
$config->setOptions($options);
$config->setToken($accessToken);
$config->setRequestMethod('GET');
$url = 'https://mail.google.com/mail/b/' .
$email_address .
'/imap/';
This is after authenticating a token for accessing the data. Then the email address can be used for your mail request or anything else that requires the email address.