Australian address fields in Gravity Forms

gf-aussie-address.php

<?php
/*
Plugin Name: Gravity Forms Aussie Addresses
Plugin URI: https://gist.github.com/webaware/f445808d0475ea0e02f2
Description: Australian address fields in Gravity Forms
Author: thewebprincess
Author URI: https://thewebprincess.com/
Version: 0.0.1

@link https://gist.github.com/thewebprincess/7855509
*/

if (!defined('ABSPATH')) {
    exit;
}

/**
* add Australia as an address type to Address fields
* @param array $address_types
* @param int $form_id
* @return array
*/
add_filter('gform_address_types', function($address_types, $form_id) {

    $address_types['australia'] = array(
        'label'       =>   'Australia',
        'country'     =>   'Australia',
        'zip_label'   =>   'Post Code',
        'state_label' =>   'State',
        'states'      => array (
                            '',
                            'Australian Capital Territory',
                            'New South Wales',
                            'Northern Territory',
                            'Queensland',
                            'South Australia',
                            'Tasmania', 'Victoria',
                            'Western Australia'
                        ),
    );

    return $address_types;

}, 10, 2);