PHP Filter, how to filter input array
I don't think that you can access the single value (easily, as you want), however you could just filter the page array and get the value that you want.
$page = filter_input(INPUT_POST, 'page', FILTER_SANITIZE_STRING, FILTER_REQUIRE_ARRAY);if (array_key_exists('name', $page)) { $name = $page['name'];}Or, if you're OK with losing the ability to work with the raw input then you could just use:
if (isset($_POST['page']['name'])) { $name = filter_var($_POST['page']['name'], FILTER_SANITIZE_STRING);}Both, however, are pretty ugly.