$client = new Google_Client();
$client->setClientId($client_id);
$client->setClientSecret($client_secret);
$client->setRedirectUri($redirect_uri);
$client->setScopes(array(
"https://www.googleapis.com/auth/plus.login",
"https://www.googleapis.com/auth/userinfo.email",
"https://www.googleapis.com/auth/userinfo.profile",
"https://www.googleapis.com/auth/plus.me",
"https://www.googleapis.com/auth/youtube.upload",
"https://www.googleapis.com/auth/youtube",
"https://www.googleapis.com/auth/youtube.force-ssl"
));
$plus = new Google_Service_Plus($client);
$youtube = new Google_Service_YouTube($client);