- $hub_mode = ((x($_GET,'hub_mode')) ? notags(trim($_GET['hub_mode'])) : '');
- $hub_topic = ((x($_GET,'hub_topic')) ? notags(trim($_GET['hub_topic'])) : '');
- $hub_challenge = ((x($_GET,'hub_challenge')) ? notags(trim($_GET['hub_challenge'])) : '');
- $hub_lease = ((x($_GET,'hub_lease_seconds')) ? notags(trim($_GET['hub_lease_seconds'])) : '');
- $hub_verify = ((x($_GET,'hub_verify_token')) ? notags(trim($_GET['hub_verify_token'])) : '');
+ $hub_mode = Strings::escapeTags(trim(defaults($_GET, 'hub_mode', '')));
+ $hub_topic = Strings::escapeTags(trim(defaults($_GET, 'hub_topic', '')));
+ $hub_challenge = Strings::escapeTags(trim(defaults($_GET, 'hub_challenge', '')));
+ $hub_lease = Strings::escapeTags(trim(defaults($_GET, 'hub_lease_seconds', '')));
+ $hub_verify = Strings::escapeTags(trim(defaults($_GET, 'hub_verify_token', '')));