refreshToken() not working in google-api-php-client - php

Question

Am using PHP client library provided by Google. Also using web applications in Google API console. When i try to refresh my token its return "Google_AuthException' with message 'Error refreshing the OAuth2 token, message: '{
"error" : "invalid_grant" " .Please Help me how refresh my token
This in My Sample code
ini_set("memory_limit", -1);
require_once 'google-api-php-client/src/Google_Client.php';
require_once 'google-api-php-client/src/contrib/Google_DriveService.php';
$client = new Google_Client();
$client->setApplicationName("Google+ PHP Starter Application");
$client->setClientId('XXXXXXXXXXX');
$client->setClientSecret('XXXXXXXXXX');
$client->setRedirectUri('http://localhost:1134/Google%20APIs/index.php');
$client->setAccessType("offline");
$client->setApprovalPrompt("force");
$SCOPES = array(
'https://www.googleapis.com/auth/drive',
'https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/userinfo.profile');
$client->setScopes($SCOPES);
$drive = new Google_DriveService($client);
$token ='{"access_token":"XXXXXXXX","token_type":"Bearer","expires_in":3600,"id_token":"XXXXXXXXXXXXXXXXXXXXXXX","refresh_token":"XXX","created":1396703189}';
$client->setAccessToken($token);
if ($client->isAccessTokenExpired()) {
$client->refreshToken("1\/ccccccxxxxx");
}
if ($client->getAccessToken()) {
$user = $client->about;
$ret = retrieveAllFiles($drive);
//var_dump($ret);
} else {
$authUrl = $client->createAuthUrl();
}
function retrieveAllFiles($service) {
$result = array();
$pageToken = NULL;
do {
try {
$parameters = array();
if ($pageToken) {
$parameters['pageToken'] = $pageToken;
}
$files = $service->files->listFiles($parameters);
$result = array_merge($result, $files['items']);
$pageToken = $files['nextPageToken'];
} catch (Exception $e) {
print "An error occurred: " . $e->getMessage();
$pageToken = NULL;
}
} while ($pageToken);
return $result;
}