// check for state/country mapping
$errors = CRM_Contact_Form_Edit_Address::formRule($fields, CRM_Core_DAO::$_nullArray, CRM_Core_DAO::$_nullObject);
// $errors === TRUE means no errors from above formRule excution,
// check for state/country mapping
$errors = CRM_Contact_Form_Edit_Address::formRule($fields, CRM_Core_DAO::$_nullArray, CRM_Core_DAO::$_nullObject);
// $errors === TRUE means no errors from above formRule excution,