- $username = x($_REQUEST, 'username') ? $_REQUEST['username'] : '';
- $email = x($_REQUEST, 'email') ? $_REQUEST['email'] : '';
- $openid_url = x($_REQUEST, 'openid_url') ? $_REQUEST['openid_url'] : '';
- $nickname = x($_REQUEST, 'nickname') ? $_REQUEST['nickname'] : '';
- $photo = x($_REQUEST, 'photo') ? $_REQUEST['photo'] : '';
- $invite_id = x($_REQUEST, 'invite_id') ? $_REQUEST['invite_id'] : '';
+ $username = defaults($_REQUEST, 'username' , '');
+ $email = defaults($_REQUEST, 'email' , '');
+ $openid_url = defaults($_REQUEST, 'openid_url', '');
+ $nickname = defaults($_REQUEST, 'nickname' , '');
+ $photo = defaults($_REQUEST, 'photo' , '');
+ $invite_id = defaults($_REQUEST, 'invite_id' , '');