/**
* Get a hash of the customer location.
* @return string
*/
public static function geolocation_ajax_get_location_hash()
{
$customer = new WC_Customer();
$location = array();
$location['country'] = $customer->get_country();
$location['state'] = $customer->get_state();
$location['postcode'] = $customer->get_postcode();
$location['city'] = $customer->get_city();
return substr(md5(implode('', $location)), 0, 12);
}