<?php

if (!defined('WEBTOTEM_INIT') || WEBTOTEM_INIT !== true) {
	if (!headers_sent()) {
		/* Report invalid access if possible. */
		header('HTTP/1.1 403 Forbidden');
	}
	exit(1);
}

/**
 * WebTotem CountryManager class for Wordpress.
 */
class WebTotemCountryManager {

	/**
	 * An array of country code => country name pairs.
	 */
	protected $countries;

	/**
	 * Get an array of all two-letter country code => country name pairs.
	 *
	 * @return array
	 *   An array of country code => country name pairs.
	 */
	public static function getStandardList() {
		$countries = [
			'AC' => __('Ascension Island', 'wtotem'),
			'AD' => __('Andorra', 'wtotem'),
			'AE' => __('United Arab Emirates', 'wtotem'),
			'AF' => __('Afghanistan', 'wtotem'),
			'AG' => __('Antigua & Barbuda', 'wtotem'),
			'AI' => __('Anguilla', 'wtotem'),
			'AL' => __('Albania', 'wtotem'),
			'AM' => __('Armenia', 'wtotem'),
			'AN' => __('Netherlands Antilles', 'wtotem'),
			'AO' => __('Angola', 'wtotem'),
			'AQ' => __('Antarctica', 'wtotem'),
			'AR' => __('Argentina', 'wtotem'),
			'AS' => __('American Samoa', 'wtotem'),
			'AT' => __('Austria', 'wtotem'),
			'AU' => __('Australia', 'wtotem'),
			'AW' => __('Aruba', 'wtotem'),
			'AX' => __('Åland Islands', 'wtotem'),
			'AZ' => __('Azerbaijan', 'wtotem'),
			'BA' => __('Bosnia & Herzegovina', 'wtotem'),
			'BB' => __('Barbados', 'wtotem'),
			'BD' => __('Bangladesh', 'wtotem'),
			'BE' => __('Belgium', 'wtotem'),
			'BF' => __('Burkina Faso', 'wtotem'),
			'BG' => __('Bulgaria', 'wtotem'),
			'BH' => __('Bahrain', 'wtotem'),
			'BI' => __('Burundi', 'wtotem'),
			'BJ' => __('Benin', 'wtotem'),
			'BL' => __('St. Barthélemy', 'wtotem'),
			'BM' => __('Bermuda', 'wtotem'),
			'BN' => __('Brunei', 'wtotem'),
			'BO' => __('Bolivia', 'wtotem'),
			'BQ' => __('Caribbean Netherlands', 'wtotem'),
			'BR' => __('Brazil', 'wtotem'),
			'BS' => __('Bahamas', 'wtotem'),
			'BT' => __('Bhutan', 'wtotem'),
			'BV' => __('Bouvet Island', 'wtotem'),
			'BW' => __('Botswana', 'wtotem'),
			'BY' => __('Belarus', 'wtotem'),
			'BZ' => __('Belize', 'wtotem'),
			'CA' => __('Canada', 'wtotem'),
			'CC' => __('Cocos (Keeling) Islands', 'wtotem'),
			'CD' => __('Congo - Kinshasa', 'wtotem'),
			'CF' => __('Central African Republic', 'wtotem'),
			'CG' => __('Congo - Brazzaville', 'wtotem'),
			'CH' => __('Switzerland', 'wtotem'),
			'CI' => __('Côte d’Ivoire', 'wtotem'),
			'CK' => __('Cook Islands', 'wtotem'),
			'CL' => __('Chile', 'wtotem'),
			'CM' => __('Cameroon', 'wtotem'),
			'CN' => __('China', 'wtotem'),
			'CO' => __('Colombia', 'wtotem'),
			'CP' => __('Clipperton Island', 'wtotem'),
			'CR' => __('Costa Rica', 'wtotem'),
			'CU' => __('Cuba', 'wtotem'),
			'CV' => __('Cape Verde', 'wtotem'),
			'CW' => __('Curaçao', 'wtotem'),
			'CX' => __('Christmas Island', 'wtotem'),
			'CY' => __('Cyprus', 'wtotem'),
			'CZ' => __('Czechia', 'wtotem'),
			'DE' => __('Germany', 'wtotem'),
			'DG' => __('Diego Garcia', 'wtotem'),
			'DJ' => __('Djibouti', 'wtotem'),
			'DK' => __('Denmark', 'wtotem'),
			'DM' => __('Dominica', 'wtotem'),
			'DO' => __('Dominican Republic', 'wtotem'),
			'DZ' => __('Algeria', 'wtotem'),
			'EA' => __('Ceuta & Melilla', 'wtotem'),
			'EC' => __('Ecuador', 'wtotem'),
			'EE' => __('Estonia', 'wtotem'),
			'EG' => __('Egypt', 'wtotem'),
			'EH' => __('Western Sahara', 'wtotem'),
			'ER' => __('Eritrea', 'wtotem'),
			'ES' => __('Spain', 'wtotem'),
			'ET' => __('Ethiopia', 'wtotem'),
			'FI' => __('Finland', 'wtotem'),
			'FJ' => __('Fiji', 'wtotem'),
			'FK' => __('Falkland Islands', 'wtotem'),
			'FM' => __('Micronesia', 'wtotem'),
			'FO' => __('Faroe Islands', 'wtotem'),
			'FR' => __('France', 'wtotem'),
			'GA' => __('Gabon', 'wtotem'),
			'GB' => __('United Kingdom', 'wtotem'),
			'GD' => __('Grenada', 'wtotem'),
			'GE' => __('Georgia', 'wtotem'),
			'GF' => __('French Guiana', 'wtotem'),
			'GG' => __('Guernsey', 'wtotem'),
			'GH' => __('Ghana', 'wtotem'),
			'GI' => __('Gibraltar', 'wtotem'),
			'GL' => __('Greenland', 'wtotem'),
			'GM' => __('Gambia', 'wtotem'),
			'GN' => __('Guinea', 'wtotem'),
			'GP' => __('Guadeloupe', 'wtotem'),
			'GQ' => __('Equatorial Guinea', 'wtotem'),
			'GR' => __('Greece', 'wtotem'),
			'GS' => __('South Georgia & South Sandwich Islands', 'wtotem'),
			'GT' => __('Guatemala', 'wtotem'),
			'GU' => __('Guam', 'wtotem'),
			'GW' => __('Guinea-Bissau', 'wtotem'),
			'GY' => __('Guyana', 'wtotem'),
			'HK' => __('Hong Kong SAR China', 'wtotem'),
			'HM' => __('Heard & McDonald Islands', 'wtotem'),
			'HN' => __('Honduras', 'wtotem'),
			'HR' => __('Croatia', 'wtotem'),
			'HT' => __('Haiti', 'wtotem'),
			'HU' => __('Hungary', 'wtotem'),
			'IC' => __('Canary Islands', 'wtotem'),
			'ID' => __('Indonesia', 'wtotem'),
			'IE' => __('Ireland', 'wtotem'),
			'IL' => __('Israel', 'wtotem'),
			'IM' => __('Isle of Man', 'wtotem'),
			'IN' => __('India', 'wtotem'),
			'IO' => __('British Indian Ocean Territory', 'wtotem'),
			'IQ' => __('Iraq', 'wtotem'),
			'IR' => __('Iran', 'wtotem'),
			'IS' => __('Iceland', 'wtotem'),
			'IT' => __('Italy', 'wtotem'),
			'JE' => __('Jersey', 'wtotem'),
			'JM' => __('Jamaica', 'wtotem'),
			'JO' => __('Jordan', 'wtotem'),
			'JP' => __('Japan', 'wtotem'),
			'KE' => __('Kenya', 'wtotem'),
			'KG' => __('Kyrgyzstan', 'wtotem'),
			'KH' => __('Cambodia', 'wtotem'),
			'KI' => __('Kiribati', 'wtotem'),
			'KM' => __('Comoros', 'wtotem'),
			'KN' => __('St. Kitts & Nevis', 'wtotem'),
			'KP' => __('North Korea', 'wtotem'),
			'KR' => __('South Korea', 'wtotem'),
			'KW' => __('Kuwait', 'wtotem'),
			'KY' => __('Cayman Islands', 'wtotem'),
			'KZ' => __('Kazakhstan', 'wtotem'),
			'LA' => __('Laos', 'wtotem'),
			'LB' => __('Lebanon', 'wtotem'),
			'LC' => __('St. Lucia', 'wtotem'),
			'LI' => __('Liechtenstein', 'wtotem'),
			'LK' => __('Sri Lanka', 'wtotem'),
			'LR' => __('Liberia', 'wtotem'),
			'LS' => __('Lesotho', 'wtotem'),
			'LT' => __('Lithuania', 'wtotem'),
			'LU' => __('Luxembourg', 'wtotem'),
			'LV' => __('Latvia', 'wtotem'),
			'LY' => __('Libya', 'wtotem'),
			'MA' => __('Morocco', 'wtotem'),
			'MC' => __('Monaco', 'wtotem'),
			'MD' => __('Moldova', 'wtotem'),
			'ME' => __('Montenegro', 'wtotem'),
			'MF' => __('St. Martin', 'wtotem'),
			'MG' => __('Madagascar', 'wtotem'),
			'MH' => __('Marshall Islands', 'wtotem'),
			'MK' => __('North Macedonia', 'wtotem'),
			'ML' => __('Mali', 'wtotem'),
			'MM' => __('Myanmar (Burma)', 'wtotem'),
			'MN' => __('Mongolia', 'wtotem'),
			'MO' => __('Macao SAR China', 'wtotem'),
			'MP' => __('Northern Mariana Islands', 'wtotem'),
			'MQ' => __('Martinique', 'wtotem'),
			'MR' => __('Mauritania', 'wtotem'),
			'MS' => __('Montserrat', 'wtotem'),
			'MT' => __('Malta', 'wtotem'),
			'MU' => __('Mauritius', 'wtotem'),
			'MV' => __('Maldives', 'wtotem'),
			'MW' => __('Malawi', 'wtotem'),
			'MX' => __('Mexico', 'wtotem'),
			'MY' => __('Malaysia', 'wtotem'),
			'MZ' => __('Mozambique', 'wtotem'),
			'NA' => __('Namibia', 'wtotem'),
			'NC' => __('New Caledonia', 'wtotem'),
			'NE' => __('Niger', 'wtotem'),
			'NF' => __('Norfolk Island', 'wtotem'),
			'NG' => __('Nigeria', 'wtotem'),
			'NI' => __('Nicaragua', 'wtotem'),
			'NL' => __('Netherlands', 'wtotem'),
			'NO' => __('Norway', 'wtotem'),
			'NP' => __('Nepal', 'wtotem'),
			'NR' => __('Nauru', 'wtotem'),
			'NU' => __('Niue', 'wtotem'),
			'NZ' => __('New Zealand', 'wtotem'),
			'OM' => __('Oman', 'wtotem'),
			'PA' => __('Panama', 'wtotem'),
			'PE' => __('Peru', 'wtotem'),
			'PF' => __('French Polynesia', 'wtotem'),
			'PG' => __('Papua New Guinea', 'wtotem'),
			'PH' => __('Philippines', 'wtotem'),
			'PK' => __('Pakistan', 'wtotem'),
			'PL' => __('Poland', 'wtotem'),
			'PM' => __('St. Pierre & Miquelon', 'wtotem'),
			'PN' => __('Pitcairn Islands', 'wtotem'),
			'PR' => __('Puerto Rico', 'wtotem'),
			'PS' => __('Palestinian Territories', 'wtotem'),
			'PT' => __('Portugal', 'wtotem'),
			'PW' => __('Palau', 'wtotem'),
			'PY' => __('Paraguay', 'wtotem'),
			'QA' => __('Qatar', 'wtotem'),
			'QO' => __('Outlying Oceania', 'wtotem'),
			'RE' => __('Réunion', 'wtotem'),
			'RO' => __('Romania', 'wtotem'),
			'RS' => __('Serbia', 'wtotem'),
			'RU' => __('Russia', 'wtotem'),
			'RW' => __('Rwanda', 'wtotem'),
			'SA' => __('Saudi Arabia', 'wtotem'),
			'SB' => __('Solomon Islands', 'wtotem'),
			'SC' => __('Seychelles', 'wtotem'),
			'SD' => __('Sudan', 'wtotem'),
			'SE' => __('Sweden', 'wtotem'),
			'SG' => __('Singapore', 'wtotem'),
			'SH' => __('St. Helena', 'wtotem'),
			'SI' => __('Slovenia', 'wtotem'),
			'SJ' => __('Svalbard & Jan Mayen', 'wtotem'),
			'SK' => __('Slovakia', 'wtotem'),
			'SL' => __('Sierra Leone', 'wtotem'),
			'SM' => __('San Marino', 'wtotem'),
			'SN' => __('Senegal', 'wtotem'),
			'SO' => __('Somalia', 'wtotem'),
			'SR' => __('Suriname', 'wtotem'),
			'SS' => __('South Sudan', 'wtotem'),
			'ST' => __('São Tomé & Príncipe', 'wtotem'),
			'SV' => __('El Salvador', 'wtotem'),
			'SX' => __('Sint Maarten', 'wtotem'),
			'SY' => __('Syria', 'wtotem'),
			'SZ' => __('Eswatini', 'wtotem'),
			'TA' => __('Tristan da Cunha', 'wtotem'),
			'TC' => __('Turks & Caicos Islands', 'wtotem'),
			'TD' => __('Chad', 'wtotem'),
			'TF' => __('French Southern Territories', 'wtotem'),
			'TG' => __('Togo', 'wtotem'),
			'TH' => __('Thailand', 'wtotem'),
			'TJ' => __('Tajikistan', 'wtotem'),
			'TK' => __('Tokelau', 'wtotem'),
			'TL' => __('Timor-Leste', 'wtotem'),
			'TM' => __('Turkmenistan', 'wtotem'),
			'TN' => __('Tunisia', 'wtotem'),
			'TO' => __('Tonga', 'wtotem'),
			'TR' => __('Turkey', 'wtotem'),
			'TT' => __('Trinidad & Tobago', 'wtotem'),
			'TV' => __('Tuvalu', 'wtotem'),
			'TW' => __('Taiwan', 'wtotem'),
			'TZ' => __('Tanzania', 'wtotem'),
			'UA' => __('Ukraine', 'wtotem'),
			'UG' => __('Uganda', 'wtotem'),
			'UM' => __('U.S. Outlying Islands', 'wtotem'),
			'US' => __('United States', 'wtotem'),
			'UY' => __('Uruguay', 'wtotem'),
			'UZ' => __('Uzbekistan', 'wtotem'),
			'VA' => __('Vatican City', 'wtotem'),
			'VC' => __('St. Vincent & Grenadines', 'wtotem'),
			'VE' => __('Venezuela', 'wtotem'),
			'VG' => __('British Virgin Islands', 'wtotem'),
			'VI' => __('U.S. Virgin Islands', 'wtotem'),
			'VN' => __('Vietnam', 'wtotem'),
			'VU' => __('Vanuatu', 'wtotem'),
			'WF' => __('Wallis & Futuna', 'wtotem'),
			'WS' => __('Samoa', 'wtotem'),
			'XK' => __('Kosovo', 'wtotem'),
			'YE' => __('Yemen', 'wtotem'),
			'YT' => __('Mayotte', 'wtotem'),
			'ZA' => __('South Africa', 'wtotem'),
			'ZM' => __('Zambia', 'wtotem'),
			'ZW' => __('Zimbabwe', 'wtotem'),
		];

		// Sort the list.
		natcasesort($countries);

		return $countries;
	}

	/**
	 * Get an array of country code => country name pairs, altered by alter hooks.
	 *
	 * @return array
	 *   An array of country code => country name pairs.
	 *
	 */
	public function getList() {
		// Populate the country list if it is not already populated.
		if (!isset($this->countries)) {
			$this->countries = static::getStandardList();
		}

		return $this->countries;
	}

    /**
     * Get an array of all two-letter country code => country name pairs.
     *
     * @return array
     *   An array of country code => country name pairs.
     */
    public static function getCountiesNameByCode() {

        $countries = [
            'AC' => "Ascension Island",
            'AD' => "Andorra",
            'AE' => "United Arab Emirates",
            'AF' => "Afghanistan",
            'AG' => "Antigua & Barbuda",
            'AI' => "Anguilla",
            'AL' => "Albania",
            'AM' => "Armenia",
            'AN' => "Netherlands Antilles",
            'AO' => "Angola",
            'AQ' => "Antarctica",
            'AR' => "Argentina",
            'AS' => "American Samoa",
            'AT' => "Austria",
            'AU' => "Australia",
            'AW' => "Aruba",
            'AX' => "Åland Islands",
            'AZ' => "Azerbaijan",
            'BA' => "Bosnia & Herzegovina",
            'BB' => "Barbados",
            'BD' => "Bangladesh",
            'BE' => "Belgium",
            'BF' => "Burkina Faso",
            'BG' => "Bulgaria",
            'BH' => "Bahrain",
            'BI' => "Burundi",
            'BJ' => "Benin",
            'BL' => "St. Barthélemy",
            'BM' => "Bermuda",
            'BN' => "Brunei",
            'BO' => "Bolivia",
            'BQ' => "Caribbean Netherlands",
            'BR' => "Brazil",
            'BS' => "Bahamas",
            'BT' => "Bhutan",
            'BV' => "Bouvet Island",
            'BW' => "Botswana",
            'BY' => "Belarus",
            'BZ' => "Belize",
            'CA' => "Canada",
            'CC' => "Cocos (Keeling) Islands",
            'CD' => "Congo - Kinshasa",
            'CF' => "Central African Republic",
            'CG' => "Congo - Brazzaville",
            'CH' => "Switzerland",
            'CI' => "Côte d’Ivoire",
            'CK' => "Cook Islands",
            'CL' => "Chile",
            'CM' => "Cameroon",
            'CN' => "China",
            'CO' => "Colombia",
            'CP' => "Clipperton Island",
            'CR' => "Costa Rica",
            'CU' => "Cuba",
            'CV' => "Cape Verde",
            'CW' => "Curaçao",
            'CX' => "Christmas Island",
            'CY' => "Cyprus",
            'CZ' => "Czechia",
            'DE' => "Germany",
            'DG' => "Diego Garcia",
            'DJ' => "Djibouti",
            'DK' => "Denmark",
            'DM' => "Dominica",
            'DO' => "Dominican Republic",
            'DZ' => "Algeria",
            'EA' => "Ceuta & Melilla",
            'EC' => "Ecuador",
            'EE' => "Estonia",
            'EG' => "Egypt",
            'EH' => "Western Sahara",
            'ER' => "Eritrea",
            'ES' => "Spain",
            'ET' => "Ethiopia",
            'FI' => "Finland",
            'FJ' => "Fiji",
            'FK' => "Falkland Islands",
            'FM' => "Micronesia",
            'FO' => "Faroe Islands",
            'FR' => "France",
            'GA' => "Gabon",
            'GB' => "United Kingdom",
            'GD' => "Grenada",
            'GE' => "Georgia",
            'GF' => "French Guiana",
            'GG' => "Guernsey",
            'GH' => "Ghana",
            'GI' => "Gibraltar",
            'GL' => "Greenland",
            'GM' => "Gambia",
            'GN' => "Guinea",
            'GP' => "Guadeloupe",
            'GQ' => "Equatorial Guinea",
            'GR' => "Greece",
            'GS' => "South Georgia & South Sandwich Islands",
            'GT' => "Guatemala",
            'GU' => "Guam",
            'GW' => "Guinea-Bissau",
            'GY' => "Guyana",
            'HK' => "Hong Kong SAR China",
            'HM' => "Heard & McDonald Islands",
            'HN' => "Honduras",
            'HR' => "Croatia",
            'HT' => "Haiti",
            'HU' => "Hungary",
            'IC' => "Canary Islands",
            'ID' => "Indonesia",
            'IE' => "Ireland",
            'IL' => "Israel",
            'IM' => "Isle of Man",
            'IN' => "India",
            'IO' => "British Indian Ocean Territory",
            'IQ' => "Iraq",
            'IR' => "Iran",
            'IS' => "Iceland",
            'IT' => "Italy",
            'JE' => "Jersey",
            'JM' => "Jamaica",
            'JO' => "Jordan",
            'JP' => "Japan",
            'KE' => "Kenya",
            'KG' => "Kyrgyzstan",
            'KH' => "Cambodia",
            'KI' => "Kiribati",
            'KM' => "Comoros",
            'KN' => "St. Kitts & Nevis",
            'KP' => "North Korea",
            'KR' => "South Korea",
            'KW' => "Kuwait",
            'KY' => "Cayman Islands",
            'KZ' => "Kazakhstan",
            'LA' => "Laos",
            'LB' => "Lebanon",
            'LC' => "St. Lucia",
            'LI' => "Liechtenstein",
            'LK' => "Sri Lanka",
            'LR' => "Liberia",
            'LS' => "Lesotho",
            'LT' => "Lithuania",
            'LU' => "Luxembourg",
            'LV' => "Latvia",
            'LY' => "Libya",
            'MA' => "Morocco",
            'MC' => "Monaco",
            'MD' => "Moldova",
            'ME' => "Montenegro",
            'MF' => "St. Martin",
            'MG' => "Madagascar",
            'MH' => "Marshall Islands",
            'MK' => "North Macedonia",
            'ML' => "Mali",
            'MM' => "Myanmar (Burma)",
            'MN' => "Mongolia",
            'MO' => "Macao SAR China",
            'MP' => "Northern Mariana Islands",
            'MQ' => "Martinique",
            'MR' => "Mauritania",
            'MS' => "Montserrat",
            'MT' => "Malta",
            'MU' => "Mauritius",
            'MV' => "Maldives",
            'MW' => "Malawi",
            'MX' => "Mexico",
            'MY' => "Malaysia",
            'MZ' => "Mozambique",
            'NA' => "Namibia",
            'NC' => "New Caledonia",
            'NE' => "Niger",
            'NF' => "Norfolk Island",
            'NG' => "Nigeria",
            'NI' => "Nicaragua",
            'NL' => "Netherlands",
            'NO' => "Norway",
            'NP' => "Nepal",
            'NR' => "Nauru",
            'NU' => "Niue",
            'NZ' => "New Zealand",
            'OM' => "Oman",
            'PA' => "Panama",
            'PE' => "Peru",
            'PF' => "French Polynesia",
            'PG' => "Papua New Guinea",
            'PH' => "Philippines",
            'PK' => "Pakistan",
            'PL' => "Poland",
            'PM' => "St. Pierre & Miquelon",
            'PN' => "Pitcairn Islands",
            'PR' => "Puerto Rico",
            'PS' => "Palestinian Territories",
            'PT' => "Portugal",
            'PW' => "Palau",
            'PY' => "Paraguay",
            'QA' => "Qatar",
            'QO' => "Outlying Oceania",
            'RE' => "Réunion",
            'RO' => "Romania",
            'RS' => "Serbia",
            'RU' => "Russia",
            'RW' => "Rwanda",
            'SA' => "Saudi Arabia",
            'SB' => "Solomon Islands",
            'SC' => "Seychelles",
            'SD' => "Sudan",
            'SE' => "Sweden",
            'SG' => "Singapore",
            'SH' => "St. Helena",
            'SI' => "Slovenia",
            'SJ' => "Svalbard & Jan Mayen",
            'SK' => "Slovakia",
            'SL' => "Sierra Leone",
            'SM' => "San Marino",
            'SN' => "Senegal",
            'SO' => "Somalia",
            'SR' => "Suriname",
            'SS' => "South Sudan",
            'ST' => "São Tomé & Príncipe",
            'SV' => "El Salvador",
            'SX' => "Sint Maarten",
            'SY' => "Syria",
            'SZ' => "Eswatini",
            'TA' => "Tristan da Cunha",
            'TC' => "Turks & Caicos Islands",
            'TD' => "Chad",
            'TF' => "French Southern Territories",
            'TG' => "Togo",
            'TH' => "Thailand",
            'TJ' => "Tajikistan",
            'TK' => "Tokelau",
            'TL' => "Timor-Leste",
            'TM' => "Turkmenistan",
            'TN' => "Tunisia",
            'TO' => "Tonga",
            'TR' => "Turkey",
            'TT' => "Trinidad & Tobago",
            'TV' => "Tuvalu",
            'TW' => "Taiwan",
            'TZ' => "Tanzania",
            'UA' => "Ukraine",
            'UG' => "Uganda",
            'UM' => "U.S. Outlying Islands",
            'US' => "United States",
            'UY' => "Uruguay",
            'UZ' => "Uzbekistan",
            'VA' => "Vatican City",
            'VC' => "St. Vincent & Grenadines",
            'VE' => "Venezuela",
            'VG' => "British Virgin Islands",
            'VI' => "U.S. Virgin Islands",
            'VN' => "Vietnam",
            'VU' => "Vanuatu",
            'WF' => "Wallis & Futuna",
            'WS' => "Samoa",
            'XK' => "Kosovo",
            'YE' => "Yemen",
            'YT' => "Mayotte",
            'ZA' => "South Africa",
            'ZM' => "Zambia",
            'ZW' => "Zimbabwe",
        ];

        // Sort the list.
        natcasesort($countries);

        return $countries;
    }

}