Update script from Google Calendar API v2 to v3

I need the following script updated from Google Calendar API v2 to v3: // load library $clientLibraryPath = '/usr/local/lib/php/library'; $oldPath = set_include_path(get_include_path() . PATH_SEPARATOR . $clientLibraryPath); require_once 'Zend/[login to view URL]'; Zend_Loader::loadClass('Zend_Gdata'); Zend_Loader::loadClass('Zend_Gdata_ClientLogin'); Zend_Loader::loadClass('Zend_Gdata_Calendar'); Zend_Loader::loadClass('Zend_Http_Client'); // create authenticated HTTP client for Calendar service $gcal = Zend_Gdata_Calendar::AUTH_SERVICE_NAME; $user = "****"; $pass = "****"; $accountType = "GOOGLE"; $client = Zend_Gdata_ClientLogin::getHttpClient($user, $pass, $gcal); $gcal = new Zend_Gdata_Calendar($client); // generate query to get event list $calendar_user='****'; $calendar_visibility = '****'; $query = $gcal->newEventQuery(); $query->setUser($calendar_user); $query->setVisibility($calendar_visibility); $query->setProjection('full'); $query->setOrderby('starttime'); $query->setSortOrder('ascending'); $query->setStartMin('2014-11-01'); $query->setStartMax(date('r')); $query->setMaxResults(1500); $query->setsingleevents('true'); // Retrieve the event list from the calendar server try { $eventFeed = $gcal->getCalendarEventFeed($query); } catch (Zend_Gdata_App_Exception $e) { echo "Error: " . $e->getMessage(); }