soderlind/css-flags

<?php

/**
 * example, add to another plugin or a themes functions.php
 */

if ( ! defined( 'ABSPATH' ) ) {
    die( 'Cheating, are we?' );
}

add_action( 'init', function() {
    add_filter('css_flags_countries', function() {
        return array( 'no','se','gb','us' ); // ISO_3166-1_alpha-2 codes: http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2#Officially_assigned_code_elements
    });
    // add_filter('css_flags_regions', function() {
    //     return array('europe'); //europe, oceania, africa, asia, northamerica, southamerica, middleeast
    // });
    add_filter('css_flags_exclude', function() {
        return array( 'gb' );
    });
});