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brinyemp4/functions.php

Last active August 5, 2025 20:46
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Country State dropdown on WordPress [inspired from WooCommerce] without any external plugin [Only theme template code & assuming reg-country form field & wrapper]
Raw
functions.php
<?php
function iws_get_states_from_country() {
$states = iws_get_woocommerce_states($_GET['country']);
$response = array();
$response['fieldType'] = count($states)>0?'select':'text';
$response['states'] = $states;
echo json_encode($response);
wp_die();
}
add_action('wp_ajax_get_states_from_country', 'iws_get_states_from_country');
add_action('wp_ajax_nopriv_get_states_from_country', 'iws_get_states_from_country');
?>
Raw
iws_woocommerce_reference.php
<?php
/**
* Get an array of worldwide countries (as used in WooCommerce).
*
* @return array Country codes as keys, country names as values.
*/
function iws_get_woocommerce_countries() {
return array(
'AF' => 'Afghanistan',
'AX' => 'Åland Islands',
'AL' => 'Albania',
'DZ' => 'Algeria',
'AS' => 'American Samoa',
'AD' => 'Andorra',
'AO' => 'Angola',
'AI' => 'Anguilla',
'AQ' => 'Antarctica',
'AG' => 'Antigua and Barbuda',
'AR' => 'Argentina',
'AM' => 'Armenia',
'AW' => 'Aruba',
'AU' => 'Australia',
'AT' => 'Austria',
'AZ' => 'Azerbaijan',
'BS' => 'Bahamas',
'BH' => 'Bahrain',
'BD' => 'Bangladesh',
'BB' => 'Barbados',
'BY' => 'Belarus',
'BE' => 'Belgium',
'BZ' => 'Belize',
'BJ' => 'Benin',
'BM' => 'Bermuda',
'BT' => 'Bhutan',
'BO' => 'Bolivia',
'BQ' => 'Bonaire, Sint Eustatius and Saba',
'BA' => 'Bosnia and Herzegovina',
'BW' => 'Botswana',
'BV' => 'Bouvet Island',
'BR' => 'Brazil',
'IO' => 'British Indian Ocean Territory',
'BN' => 'Brunei Darussalam',
'BG' => 'Bulgaria',
'BF' => 'Burkina Faso',
'BI' => 'Burundi',
'KH' => 'Cambodia',
'CM' => 'Cameroon',
'CA' => 'Canada',
'CV' => 'Cape Verde',
'KY' => 'Cayman Islands',
'CF' => 'Central African Republic',
'TD' => 'Chad',
'CL' => 'Chile',
'CN' => 'China',
'CX' => 'Christmas Island',
'CC' => 'Cocos (Keeling) Islands',
'CO' => 'Colombia',
'KM' => 'Comoros',
'CG' => 'Congo',
'CD' => 'Congo, The Democratic Republic of the',
'CK' => 'Cook Islands',
'CR' => 'Costa Rica',
'CI' => 'Côte d\'Ivoire',
'HR' => 'Croatia',
'CU' => 'Cuba',
'CW' => 'Curaçao',
'CY' => 'Cyprus',
'CZ' => 'Czechia',
'DK' => 'Denmark',
'DJ' => 'Djibouti',
'DM' => 'Dominica',
'DO' => 'Dominican Republic',
'EC' => 'Ecuador',
'EG' => 'Egypt',
'SV' => 'El Salvador',
'GQ' => 'Equatorial Guinea',
'ER' => 'Eritrea',
'EE' => 'Estonia',
'SZ' => 'Eswatini',
'ET' => 'Ethiopia',
'FK' => 'Falkland Islands (Malvinas)',
'FO' => 'Faroe Islands',
'FJ' => 'Fiji',
'FI' => 'Finland',
'FR' => 'France',
'GF' => 'French Guiana',
'PF' => 'French Polynesia',
'TF' => 'French Southern Territories',
'GA' => 'Gabon',
'GM' => 'Gambia',
'GE' => 'Georgia',
'DE' => 'Germany',
'GH' => 'Ghana',
'GI' => 'Gibraltar',
'GR' => 'Greece',
'GL' => 'Greenland',
'GD' => 'Grenada',
'GP' => 'Guadeloupe',
'GU' => 'Guam',
'GT' => 'Guatemala',
'GG' => 'Guernsey',
'GN' => 'Guinea',
'GW' => 'Guinea-Bissau',
'GY' => 'Guyana',
'HT' => 'Haiti',
'HM' => 'Heard Island and McDonald Islands',
'VA' => 'Holy See (Vatican City State)',
'HN' => 'Honduras',
'HK' => 'Hong Kong',
'HU' => 'Hungary',
'IS' => 'Iceland',
'IN' => 'India',
'ID' => 'Indonesia',
'IR' => 'Iran, Islamic Republic of',
'IQ' => 'Iraq',
'IE' => 'Ireland',
'IM' => 'Isle of Man',
'IL' => 'Israel',
'IT' => 'Italy',
'JM' => 'Jamaica',
'JP' => 'Japan',
'JE' => 'Jersey',
'JO' => 'Jordan',
'KZ' => 'Kazakhstan',
'KE' => 'Kenya',
'KI' => 'Kiribati',
'KP' => 'Korea, Democratic People\'s Republic of',
'KR' => 'Korea, Republic of',
'KW' => 'Kuwait',
'KG' => 'Kyrgyzstan',
'LA' => 'Lao People\'s Democratic Republic',
'LV' => 'Latvia',
'LB' => 'Lebanon',
'LS' => 'Lesotho',
'LR' => 'Liberia',
'LY' => 'Libya',
'LI' => 'Liechtenstein',
'LT' => 'Lithuania',
'LU' => 'Luxembourg',
'MO' => 'Macao',
'MG' => 'Madagascar',
'MW' => 'Malawi',
'MY' => 'Malaysia',
'MV' => 'Maldives',
'ML' => 'Mali',
'MT' => 'Malta',
'MH' => 'Marshall Islands',
'MQ' => 'Martinique',
'MR' => 'Mauritania',
'MU' => 'Mauritius',
'YT' => 'Mayotte',
'MX' => 'Mexico',
'FM' => 'Micronesia, Federated States of',
'MD' => 'Moldova, Republic of',
'MC' => 'Monaco',
'MN' => 'Mongolia',
'ME' => 'Montenegro',
'MS' => 'Montserrat',
'MA' => 'Morocco',
'MZ' => 'Mozambique',
'MM' => 'Myanmar',
'NA' => 'Namibia',
'NR' => 'Nauru',
'NP' => 'Nepal',
'NL' => 'Netherlands',
'NC' => 'New Caledonia',
'NZ' => 'New Zealand',
'NI' => 'Nicaragua',
'NE' => 'Niger',
'NG' => 'Nigeria',
'NU' => 'Niue',
'NF' => 'Norfolk Island',
'MK' => 'North Macedonia',
'MP' => 'Northern Mariana Islands',
'NO' => 'Norway',
'OM' => 'Oman',
'PK' => 'Pakistan',
'PW' => 'Palau',
'PS' => 'Palestine, State of',
'PA' => 'Panama',
'PG' => 'Papua New Guinea',
'PY' => 'Paraguay',
'PE' => 'Peru',
'PH' => 'Philippines',
'PN' => 'Pitcairn',
'PL' => 'Poland',
'PT' => 'Portugal',
'PR' => 'Puerto Rico',
'QA' => 'Qatar',
'RE' => 'Réunion',
'RO' => 'Romania',
'RU' => 'Russian Federation',
'RW' => 'Rwanda',
'BL' => 'Saint Barthélemy',
'SH' => 'Saint Helena, Ascension and Tristan da Cunha',
'KN' => 'Saint Kitts and Nevis',
'LC' => 'Saint Lucia',
'MF' => 'Saint Martin (French part)',
'PM' => 'Saint Pierre and Miquelon',
'VC' => 'Saint Vincent and the Grenadines',
'WS' => 'Samoa',
'SM' => 'San Marino',
'ST' => 'Sao Tome and Principe',
'SA' => 'Saudi Arabia',
'SN' => 'Senegal',
'RS' => 'Serbia',
'SC' => 'Seychelles',
'SL' => 'Sierra Leone',
'SG' => 'Singapore',
'SX' => 'Sint Maarten (Dutch part)',
'SK' => 'Slovakia',
'SI' => 'Slovenia',
'SB' => 'Solomon Islands',
'SO' => 'Somalia',
'ZA' => 'South Africa',
'GS' => 'South Georgia and the South Sandwich Islands',
'SS' => 'South Sudan',
'ES' => 'Spain',
'LK' => 'Sri Lanka',
'SD' => 'Sudan',
'SR' => 'Suriname',
'SJ' => 'Svalbard and Jan Mayen',
'SE' => 'Sweden',
'CH' => 'Switzerland',
'SY' => 'Syrian Arab Republic',
'TW' => 'Taiwan, Province of China',
'TJ' => 'Tajikistan',
'TZ' => 'Tanzania, United Republic of',
'TH' => 'Thailand',
'TL' => 'Timor-Leste',
'TG' => 'Togo',
'TK' => 'Tokelau',
'TO' => 'Tonga',
'TT' => 'Trinidad and Tobago',
'TN' => 'Tunisia',
'TR' => 'Turkey',
'TM' => 'Turkmenistan',
'TC' => 'Turks and Caicos Islands',
'TV' => 'Tuvalu',
'UG' => 'Uganda',
'UA' => 'Ukraine',
'AE' => 'United Arab Emirates',
'GB' => 'United Kingdom',
'UM' => 'United States Minor Outlying Islands',
'US' => 'United States',
'UY' => 'Uruguay',
'UZ' => 'Uzbekistan',
'VU' => 'Vanuatu',
'VE' => 'Venezuela, Bolivarian Republic of',
'VN' => 'Viet Nam',
'VG' => 'Virgin Islands, British',
'VI' => 'Virgin Islands, U.S.',
'WF' => 'Wallis and Futuna',
'EH' => 'Western Sahara',
'YE' => 'Yemen',
'ZM' => 'Zambia',
'ZW' => 'Zimbabwe',
);
}
/**
* Get an array of states for a given country code, using WooCommerce reference.
*
* @param string $country_code The 2-letter country code (e.g., 'US', 'IN').
* @return array Array of state codes as keys and state names as values. Empty array if not found.
*/
function iws_get_woocommerce_states( $country_code ) {
$states = array(
'US' => array(
'AL' => 'Alabama',
'AK' => 'Alaska',
'AZ' => 'Arizona',
'AR' => 'Arkansas',
'CA' => 'California',
'CO' => 'Colorado',
'CT' => 'Connecticut',
'DE' => 'Delaware',
'DC' => 'District Of Columbia',
'FL' => 'Florida',
'GA' => 'Georgia',
'HI' => 'Hawaii',
'ID' => 'Idaho',
'IL' => 'Illinois',
'IN' => 'Indiana',
'IA' => 'Iowa',
'KS' => 'Kansas',
'KY' => 'Kentucky',
'LA' => 'Louisiana',
'ME' => 'Maine',
'MD' => 'Maryland',
'MA' => 'Massachusetts',
'MI' => 'Michigan',
'MN' => 'Minnesota',
'MS' => 'Mississippi',
'MO' => 'Missouri',
'MT' => 'Montana',
'NE' => 'Nebraska',
'NV' => 'Nevada',
'NH' => 'New Hampshire',
'NJ' => 'New Jersey',
'NM' => 'New Mexico',
'NY' => 'New York',
'NC' => 'North Carolina',
'ND' => 'North Dakota',
'OH' => 'Ohio',
'OK' => 'Oklahoma',
'OR' => 'Oregon',
'PA' => 'Pennsylvania',
'RI' => 'Rhode Island',
'SC' => 'South Carolina',
'SD' => 'South Dakota',
'TN' => 'Tennessee',
'TX' => 'Texas',
'UT' => 'Utah',
'VT' => 'Vermont',
'VA' => 'Virginia',
'WA' => 'Washington',
'WV' => 'West Virginia',
'WI' => 'Wisconsin',
'WY' => 'Wyoming',
),
'CA' => array(
'AB' => 'Alberta',
'BC' => 'British Columbia',
'MB' => 'Manitoba',
'NB' => 'New Brunswick',
'NL' => 'Newfoundland and Labrador',
'NS' => 'Nova Scotia',
'NT' => 'Northwest Territories',
'NU' => 'Nunavut',
'ON' => 'Ontario',
'PE' => 'Prince Edward Island',
'QC' => 'Quebec',
'SK' => 'Saskatchewan',
'YT' => 'Yukon',
),
'AU' => array(
'ACT' => 'Australian Capital Territory',
'NSW' => 'New South Wales',
'NT' => 'Northern Territory',
'QLD' => 'Queensland',
'SA' => 'South Australia',
'TAS' => 'Tasmania',
'VIC' => 'Victoria',
'WA' => 'Western Australia',
),
'IN' => array(
'AP' => 'Andhra Pradesh',
'AR' => 'Arunachal Pradesh',
'AS' => 'Assam',
'BR' => 'Bihar',
'CT' => 'Chhattisgarh',
'GA' => 'Goa',
'GJ' => 'Gujarat',
'HR' => 'Haryana',
'HP' => 'Himachal Pradesh',
'JK' => 'Jammu and Kashmir',
'JH' => 'Jharkhand',
'KA' => 'Karnataka',
'KL' => 'Kerala',
'MP' => 'Madhya Pradesh',
'MH' => 'Maharashtra',
'MN' => 'Manipur',
'ML' => 'Meghalaya',
'MZ' => 'Mizoram',
'NL' => 'Nagaland',
'OR' => 'Odisha',
'PB' => 'Punjab',
'RJ' => 'Rajasthan',
'SK' => 'Sikkim',
'TN' => 'Tamil Nadu',
'TG' => 'Telangana',
'TR' => 'Tripura',
'UP' => 'Uttar Pradesh',
'UT' => 'Uttarakhand',
'WB' => 'West Bengal',
'AN' => 'Andaman and Nicobar Islands',
'CH' => 'Chandigarh',
'DN' => 'Dadra and Nagar Haveli and Daman and Diu',
'DL' => 'Delhi',
'LD' => 'Lakshadweep',
'PY' => 'Puducherry',
),
// Add more countries and their states/provinces as needed, following WooCommerce reference.
);
$country_code = strtoupper( $country_code );
return isset( $states[ $country_code ] ) ? $states[ $country_code ] : array();
}
?>
Raw
iws_woocommerce_references.js
jQuery(document).ready(function() {
jQuery("#reg-country").on('change', function(){
let selectedCountry = jQuery(this).val();
jQuery.ajax({
type : "GET",
dataType : "json",
url : "/wp-admin/admin-ajax.php",
data : {action: "get_states_from_country", country: selectedCountry},
success: function(response) {
let fieldType = response.fieldType;
let responseHTML = '';
if (fieldType == 'text') {
responseHTML += '<input type="text" name="billing_state" id="reg-state-text" class="ld-form__field ld-form__field-billing_state ld-form__field--type-text" />';
} else if (fieldType == 'select') {
responseHTML += '<select name="billing_state" id="reg-state-select" class="ld-form__field ld-form__field-billing_state ld-form__field--type-select">';
Object.entries(response.states).forEach(([statecode, statevalue]) => {
responseHTML += '<option value="'+statecode+'">'+statevalue+'</option>';
});
responseHTML += '</select>';
}
jQuery("#reg-country-wrapper").html(responseHTML);
}
});
});
});
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