I have got access_token. Using zend framework. I have obtained token for multiple permissions. like gmail inbox feeds, contacts, docs and calendar and google email settings. my question is that using three-leged.php. what the maximum life time of access_token.and if my token expires within a limited time. how can i get new token without user interaction. i am using this api.
By default, the token is "long-lived" and does not expire unless the user changes pertinent account info and/or their password.