Conversion array for WordPress locale codes and standard language codes and names

wp-locale-conversion-array.php

<?php
$wp_locale_conversion = array(
	'af' => array(
		'name' => 'Afrikaans',
		'code' => 'af',
		'wp_locale' => 'af'
	) ,
	'ak' => array(
		'name' => 'Akan',
		'code' => 'ak',
		'wp_locale' => 'ak'
	) ,
	'sq' => array(
		'name' => 'Albanian',
		'code' => 'sq',
		'wp_locale' => 'sq'
	) ,
	'am' => array(
		'name' => 'Amharic',
		'code' => 'am',
		'wp_locale' => 'am'
	) ,
	'ar' => array(
		'name' => 'Arabic',
		'code' => 'ar',
		'wp_locale' => 'ar'
	) ,
	'hy' => array(
		'name' => 'Armenian',
		'code' => 'hy',
		'wp_locale' => 'hy'
	) ,
	'rup_MK' => array(
		'name' => 'Aromanian',
		'code' => 'rup',
		'wp_locale' => 'rup_MK'
	) ,
	'as' => array(
		'name' => 'Assamese',
		'code' => 'as',
		'wp_locale' => 'as'
	) ,
	'az' => array(
		'name' => 'Azerbaijani',
		'code' => 'az',
		'wp_locale' => 'az'
	) ,
	'az_TR' => array(
		'name' => 'Azerbaijani (Turkey)',
		'code' => 'az-tr',
		'wp_locale' => 'az_TR'
	) ,
	'ba' => array(
		'name' => 'Bashkir',
		'code' => 'ba',
		'wp_locale' => 'ba'
	) ,
	'eu' => array(
		'name' => 'Basque',
		'code' => 'eu',
		'wp_locale' => 'eu'
	) ,
	'bel' => array(
		'name' => 'Belarusian',
		'code' => 'bel',
		'wp_locale' => 'bel'
	) ,
	'bn_BD' => array(
		'name' => 'Bengali',
		'code' => 'bn',
		'wp_locale' => 'bn_BD'
	) ,
	'bs_BA' => array(
		'name' => 'Bosnian',
		'code' => 'bs',
		'wp_locale' => 'bs_BA'
	) ,
	'bg_BG' => array(
		'name' => 'Bulgarian',
		'code' => 'bg',
		'wp_locale' => 'bg_BG'
	) ,
	'my_MM' => array(
		'name' => 'Burmese',
		'code' => 'mya',
		'wp_locale' => 'my_MM'
	) ,
	'ca' => array(
		'name' => 'Catalan',
		'code' => 'ca',
		'wp_locale' => 'ca'
	) ,
	'bal' => array(
		'name' => 'Catalan (Balear)',
		'code' => 'bal',
		'wp_locale' => 'bal'
	) ,
	'zh_CN' => array(
		'name' => 'Chinese (China)',
		'code' => 'zh-cn',
		'wp_locale' => 'zh_CN'
	) ,
	'zh_HK' => array(
		'name' => 'Chinese (Hong Kong)',
		'code' => 'zh-hk',
		'wp_locale' => 'zh_HK'
	) ,
	'zh_TW' => array(
		'name' => 'Chinese (Taiwan)',
		'code' => 'zh-tw',
		'wp_locale' => 'zh_TW'
	) ,
	'co' => array(
		'name' => 'Corsican',
		'code' => 'co',
		'wp_locale' => 'co'
	) ,
	'hr' => array(
		'name' => 'Croatian',
		'code' => 'hr',
		'wp_locale' => 'hr'
	) ,
	'cs_CZ' => array(
		'name' => 'Czech',
		'code' => 'cs',
		'wp_locale' => 'cs_CZ'
	) ,
	'da_DK' => array(
		'name' => 'Danish',
		'code' => 'da',
		'wp_locale' => 'da_DK'
	) ,
	'dv' => array(
		'name' => 'Dhivehi',
		'code' => 'dv',
		'wp_locale' => 'dv'
	) ,
	'nl_NL' => array(
		'name' => 'Dutch',
		'code' => 'nl',
		'wp_locale' => 'nl_NL'
	) ,
	'nl_BE' => array(
		'name' => 'Dutch (Belgium)',
		'code' => 'nl-be',
		'wp_locale' => 'nl_BE'
	) ,
	'en_US' => array(
		'name' => 'English',
		'code' => 'en',
		'wp_locale' => 'en_US'
	) ,
	'en_AU' => array(
		'name' => 'English (Australia)',
		'code' => 'en-au',
		'wp_locale' => 'en_AU'
	) ,
	'en_CA' => array(
		'name' => 'English (Canada)',
		'code' => 'en-ca',
		'wp_locale' => 'en_CA'
	) ,
	'en_GB' => array(
		'name' => 'English (UK)',
		'code' => 'en-gb',
		'wp_locale' => 'en_GB'
	) ,
	'eo' => array(
		'name' => 'Esperanto',
		'code' => 'eo',
		'wp_locale' => 'eo'
	) ,
	'et' => array(
		'name' => 'Estonian',
		'code' => 'et',
		'wp_locale' => 'et'
	) ,
	'fo' => array(
		'name' => 'Faroese',
		'code' => 'fo',
		'wp_locale' => 'fo'
	) ,
	'fi' => array(
		'name' => 'Finnish',
		'code' => 'fi',
		'wp_locale' => 'fi'
	) ,
	'fr_BE' => array(
		'name' => 'French (Belgium)',
		'code' => 'fr-be',
		'wp_locale' => 'fr_BE'
	) ,
	'fr_FR' => array(
		'name' => 'French (France)',
		'code' => 'fr',
		'wp_locale' => 'fr_FR'
	) ,
	'fy' => array(
		'name' => 'Frisian',
		'code' => 'fy',
		'wp_locale' => 'fy'
	) ,
	'fuc' => array(
		'name' => 'Fulah',
		'code' => 'fuc',
		'wp_locale' => 'fuc'
	) ,
	'gl_ES' => array(
		'name' => 'Galician',
		'code' => 'gl',
		'wp_locale' => 'gl_ES'
	) ,
	'ka_GE' => array(
		'name' => 'Georgian',
		'code' => 'ka',
		'wp_locale' => 'ka_GE'
	) ,
	'de_DE' => array(
		'name' => 'German',
		'code' => 'de',
		'wp_locale' => 'de_DE'
	) ,
	'de_CH' => array(
		'name' => 'German (Switzerland)',
		'code' => 'de-ch',
		'wp_locale' => 'de_CH'
	) ,
	'el' => array(
		'name' => 'Greek',
		'code' => 'el',
		'wp_locale' => 'el'
	) ,
	'gn' => array(
		'name' => 'Guaraní',
		'code' => 'gn',
		'wp_locale' => 'gn'
	) ,
	'gu_IN' => array(
		'name' => 'Gujarati',
		'code' => 'gu',
		'wp_locale' => 'gu_IN'
	) ,
	'haw_US' => array(
		'name' => 'Hawaiian',
		'code' => 'haw',
		'wp_locale' => 'haw_US'
	) ,
	'haz' => array(
		'name' => 'Hazaragi',
		'code' => 'haz',
		'wp_locale' => 'haz'
	) ,
	'he_IL' => array(
		'name' => 'Hebrew',
		'code' => 'he',
		'wp_locale' => 'he_IL'
	) ,
	'hi_IN' => array(
		'name' => 'Hindi',
		'code' => 'hi',
		'wp_locale' => 'hi_IN'
	) ,
	'hu_HU' => array(
		'name' => 'Hungarian',
		'code' => 'hu',
		'wp_locale' => 'hu_HU'
	) ,
	'is_IS' => array(
		'name' => 'Icelandic',
		'code' => 'is',
		'wp_locale' => 'is_IS'
	) ,
	'ido' => array(
		'name' => 'Ido',
		'code' => 'ido',
		'wp_locale' => 'ido'
	) ,
	'id_ID' => array(
		'name' => 'Indonesian',
		'code' => 'id',
		'wp_locale' => 'id_ID'
	) ,
	'ga' => array(
		'name' => 'Irish',
		'code' => 'ga',
		'wp_locale' => 'ga'
	) ,
	'it_IT' => array(
		'name' => 'Italian',
		'code' => 'it',
		'wp_locale' => 'it_IT'
	) ,
	'ja' => array(
		'name' => 'Japanese',
		'code' => 'ja',
		'wp_locale' => 'ja'
	) ,
	'jv_ID' => array(
		'name' => 'Javanese',
		'code' => 'jv',
		'wp_locale' => 'jv_ID'
	) ,
	'kn' => array(
		'name' => 'Kannada',
		'code' => 'kn',
		'wp_locale' => 'kn'
	) ,
	'kk' => array(
		'name' => 'Kazakh',
		'code' => 'kk',
		'wp_locale' => 'kk'
	) ,
	'km' => array(
		'name' => 'Khmer',
		'code' => 'km',
		'wp_locale' => 'km'
	) ,
	'kin' => array(
		'name' => 'Kinyarwanda',
		'code' => 'kin',
		'wp_locale' => 'kin'
	) ,
	'ky_KY' => array(
		'name' => 'Kirghiz',
		'code' => 'ky',
		'wp_locale' => 'ky_KY'
	) ,
	'ko_KR' => array(
		'name' => 'Korean',
		'code' => 'ko',
		'wp_locale' => 'ko_KR'
	) ,
	'ckb' => array(
		'name' => 'Kurdish (Sorani)',
		'code' => 'ckb',
		'wp_locale' => 'ckb'
	) ,
	'lo' => array(
		'name' => 'Lao',
		'code' => 'lo',
		'wp_locale' => 'lo'
	) ,
	'lv' => array(
		'name' => 'Latvian',
		'code' => 'lv',
		'wp_locale' => 'lv'
	) ,
	'li' => array(
		'name' => 'Limburgish',
		'code' => 'li',
		'wp_locale' => 'li'
	) ,
	'lin' => array(
		'name' => 'Lingala',
		'code' => 'lin',
		'wp_locale' => 'lin'
	) ,
	'lt_LT' => array(
		'name' => 'Lithuanian',
		'code' => 'lt',
		'wp_locale' => 'lt_LT'
	) ,
	'lb_LU' => array(
		'name' => 'Luxembourgish',
		'code' => 'lb',
		'wp_locale' => 'lb_LU'
	) ,
	'mk_MK' => array(
		'name' => 'Macedonian',
		'code' => 'mk',
		'wp_locale' => 'mk_MK'
	) ,
	'mg_MG' => array(
		'name' => 'Malagasy',
		'code' => 'mg',
		'wp_locale' => 'mg_MG'
	) ,
	'ms_MY' => array(
		'name' => 'Malay',
		'code' => 'ms',
		'wp_locale' => 'ms_MY'
	) ,
	'ml_IN' => array(
		'name' => 'Malayalam',
		'code' => 'ml',
		'wp_locale' => 'ml_IN'
	) ,
	'mr' => array(
		'name' => 'Marathi',
		'code' => 'mr',
		'wp_locale' => 'mr'
	) ,
	'xmf' => array(
		'name' => 'Mingrelian',
		'code' => 'xmf',
		'wp_locale' => 'xmf'
	) ,
	'mn' => array(
		'name' => 'Mongolian',
		'code' => 'mn',
		'wp_locale' => 'mn'
	) ,
	'me_ME' => array(
		'name' => 'Montenegrin',
		'code' => 'me',
		'wp_locale' => 'me_ME'
	) ,
	'ne_NP' => array(
		'name' => 'Nepali',
		'code' => 'ne',
		'wp_locale' => 'ne_NP'
	) ,
	'nb_NO' => array(
		'name' => 'Norwegian (Bokmål)',
		'code' => 'nb',
		'wp_locale' => 'nb_NO'
	) ,
	'nn_NO' => array(
		'name' => 'Norwegian (Nynorsk)',
		'code' => 'nn',
		'wp_locale' => 'nn_NO'
	) ,
	'ory' => array(
		'name' => 'Oriya',
		'code' => 'ory',
		'wp_locale' => 'ory'
	) ,
	'os' => array(
		'name' => 'Ossetic',
		'code' => 'os',
		'wp_locale' => 'os'
	) ,
	'ps' => array(
		'name' => 'Pashto',
		'code' => 'ps',
		'wp_locale' => 'ps'
	) ,
	'fa_IR' => array(
		'name' => 'Persian',
		'code' => 'fa',
		'wp_locale' => 'fa_IR'
	) ,
	'fa_AF' => array(
		'name' => 'Persian (Afghanistan)',
		'code' => 'fa-af',
		'wp_locale' => 'fa_AF'
	) ,
	'pl_PL' => array(
		'name' => 'Polish',
		'code' => 'pl',
		'wp_locale' => 'pl_PL'
	) ,
	'pt_BR' => array(
		'name' => 'Portuguese (Brazil)',
		'code' => 'pt-br',
		'wp_locale' => 'pt_BR'
	) ,
	'pt_PT' => array(
		'name' => 'Portuguese (Portugal)',
		'code' => 'pt',
		'wp_locale' => 'pt_PT'
	) ,
	'pa_IN' => array(
		'name' => 'Punjabi',
		'code' => 'pa',
		'wp_locale' => 'pa_IN'
	) ,
	'rhg' => array(
		'name' => 'Rohingya',
		'code' => 'rhg',
		'wp_locale' => 'rhg'
	) ,
	'ro_RO' => array(
		'name' => 'Romanian',
		'code' => 'ro',
		'wp_locale' => 'ro_RO'
	) ,
	'ru_RU' => array(
		'name' => 'Russian',
		'code' => 'ru',
		'wp_locale' => 'ru_RU'
	) ,
	'ru_UA' => array(
		'name' => 'Russian (Ukraine)',
		'code' => 'ru-ua',
		'wp_locale' => 'ru_UA'
	) ,
	'rue' => array(
		'name' => 'Rusyn',
		'code' => 'rue',
		'wp_locale' => 'rue'
	) ,
	'sah' => array(
		'name' => 'Sakha',
		'code' => 'sah',
		'wp_locale' => 'sah'
	) ,
	'sa_IN' => array(
		'name' => 'Sanskrit',
		'code' => 'sa-in',
		'wp_locale' => 'sa_IN'
	) ,
	'srd' => array(
		'name' => 'Sardinian',
		'code' => 'srd',
		'wp_locale' => 'srd'
	) ,
	'gd' => array(
		'name' => 'Scottish Gaelic',
		'code' => 'gd',
		'wp_locale' => 'gd'
	) ,
	'sr_RS' => array(
		'name' => 'Serbian',
		'code' => 'sr',
		'wp_locale' => 'sr_RS'
	) ,
	'sd_PK' => array(
		'name' => 'Sindhi',
		'code' => 'sd',
		'wp_locale' => 'sd_PK'
	) ,
	'si_LK' => array(
		'name' => 'Sinhala',
		'code' => 'si',
		'wp_locale' => 'si_LK'
	) ,
	'sk_SK' => array(
		'name' => 'Slovak',
		'code' => 'sk',
		'wp_locale' => 'sk_SK'
	) ,
	'sl_SI' => array(
		'name' => 'Slovenian',
		'code' => 'sl',
		'wp_locale' => 'sl_SI'
	) ,
	'so_SO' => array(
		'name' => 'Somali',
		'code' => 'so',
		'wp_locale' => 'so_SO'
	) ,
	'azb' => array(
		'name' => 'South Azerbaijani',
		'code' => 'azb',
		'wp_locale' => 'azb'
	) ,
	'es_AR' => array(
		'name' => 'Spanish (Argentina)',
		'code' => 'es-ar',
		'wp_locale' => 'es_AR'
	) ,
	'es_CL' => array(
		'name' => 'Spanish (Chile)',
		'code' => 'es-cl',
		'wp_locale' => 'es_CL'
	) ,
	'es_CO' => array(
		'name' => 'Spanish (Colombia)',
		'code' => 'es-co',
		'wp_locale' => 'es_CO'
	) ,
	'es_MX' => array(
		'name' => 'Spanish (Mexico)',
		'code' => 'es-mx',
		'wp_locale' => 'es_MX'
	) ,
	'es_PE' => array(
		'name' => 'Spanish (Peru)',
		'code' => 'es-pe',
		'wp_locale' => 'es_PE'
	) ,
	'es_PR' => array(
		'name' => 'Spanish (Puerto Rico)',
		'code' => 'es-pr',
		'wp_locale' => 'es_PR'
	) ,
	'es_ES' => array(
		'name' => 'Spanish (Spain)',
		'code' => 'es',
		'wp_locale' => 'es_ES'
	) ,
	'es_VE' => array(
		'name' => 'Spanish (Venezuela)',
		'code' => 'es-ve',
		'wp_locale' => 'es_VE'
	) ,
	'su_ID' => array(
		'name' => 'Sundanese',
		'code' => 'su',
		'wp_locale' => 'su_ID'
	) ,
	'sw' => array(
		'name' => 'Swahili',
		'code' => 'sw',
		'wp_locale' => 'sw'
	) ,
	'sv_SE' => array(
		'name' => 'Swedish',
		'code' => 'sv',
		'wp_locale' => 'sv_SE'
	) ,
	'gsw' => array(
		'name' => 'Swiss German',
		'code' => 'gsw',
		'wp_locale' => 'gsw'
	) ,
	'tl' => array(
		'name' => 'Tagalog',
		'code' => 'tl',
		'wp_locale' => 'tl'
	) ,
	'tg' => array(
		'name' => 'Tajik',
		'code' => 'tg',
		'wp_locale' => 'tg'
	) ,
	'tzm' => array(
		'name' => 'Tamazight (Central Atlas)',
		'code' => 'tzm',
		'wp_locale' => 'tzm'
	) ,
	'ta_IN' => array(
		'name' => 'Tamil',
		'code' => 'ta',
		'wp_locale' => 'ta_IN'
	) ,
	'ta_LK' => array(
		'name' => 'Tamil (Sri Lanka)',
		'code' => 'ta-lk',
		'wp_locale' => 'ta_LK'
	) ,
	'tt_RU' => array(
		'name' => 'Tatar',
		'code' => 'tt',
		'wp_locale' => 'tt_RU'
	) ,
	'te' => array(
		'name' => 'Telugu',
		'code' => 'te',
		'wp_locale' => 'te'
	) ,
	'th' => array(
		'name' => 'Thai',
		'code' => 'th',
		'wp_locale' => 'th'
	) ,
	'bo' => array(
		'name' => 'Tibetan',
		'code' => 'bo',
		'wp_locale' => 'bo'
	) ,
	'tir' => array(
		'name' => 'Tigrinya',
		'code' => 'tir',
		'wp_locale' => 'tir'
	) ,
	'tr_TR' => array(
		'name' => 'Turkish',
		'code' => 'tr',
		'wp_locale' => 'tr_TR'
	) ,
	'tuk' => array(
		'name' => 'Turkmen',
		'code' => 'tuk',
		'wp_locale' => 'tuk'
	) ,
	'ug_CN' => array(
		'name' => 'Uighur',
		'code' => 'ug',
		'wp_locale' => 'ug_CN'
	) ,
	'uk' => array(
		'name' => 'Ukrainian',
		'code' => 'uk',
		'wp_locale' => 'uk'
	) ,
	'ur' => array(
		'name' => 'Urdu',
		'code' => 'ur',
		'wp_locale' => 'ur'
	) ,
	'uz_UZ' => array(
		'name' => 'Uzbek',
		'code' => 'uz',
		'wp_locale' => 'uz_UZ'
	) ,
	'vi' => array(
		'name' => 'Vietnamese',
		'code' => 'vi',
		'wp_locale' => 'vi'
	) ,
	'wa' => array(
		'name' => 'Walloon',
		'code' => 'wa',
		'wp_locale' => 'wa'
	) ,
	'cy' => array(
		'name' => 'Welsh',
		'code' => 'cy',
		'wp_locale' => 'cy'
	) ,
	'or' => array(
		'name' => 'Yoruba',
		'code' => 'yor',
		'wp_locale' => 'yor'
	)
);

this may be helpful too: https://gist.github.com/liesislukas/6f3a0102b4d2ca7138f1c7c746247d9a