Как мне настроить видимость aviable?

header('Location: ' . $config['http_home_url'] );

header("Location: ".($config['allow_alt_url'] ? $config['http_home_url'] .'user/'.urlencode($member_id['name']).'/' : $PHP_SELF.'?subaction=userinfo&user='.urlencode($member_id['name'])));