Shipping Restrictions

restrictions.php

<?php
$shipping_restrictions = array(
    'canada' => array(
        'allowed_countries' => array('CA'),
    ),
    'domestic-only' => array(
        'allowed_countries' => array('US'),
    ),
    'usa-canada' => array(
        'allowed_countries' => array('US', 'CA'),
    ),
    'international' => array(
        'allowed_countries' => array('US', 'CA', 'GB', 'AU', 'NZ', 'AT', 'BE', 'FR', 'DE', 'IE', 'LU', 'NL', 'RO', 'ES', 'CL'),
    )
);