With Numbers_Words class you can convert numbers written in arabic digits to words in several languages. You can convert an integer between -infinity and infinity. If your system does not support such long numbers you can call Numbers_Words::toWords() with just a string.

With the Numbers_Words::toCurrency($num, $locale, 'USD') method you can convert a number (decimal and fraction part) to words with currency name.

The following languages are supported:
* bg (Bulgarian) by Kouber Saparev
* cs (Czech) by Petr 'PePa' Pavel
* de (German) by Piotr Klaban
* dk (Danish) by Jesper Veggerby
* en_100 (Donald Knuth system, English) by Piotr Klaban
* en_GB (British English) by Piotr Klaban
* en_IN (Indian English) by Piotr Klaban
* en_US (American English) by Piotr Klaban
* es (Spanish Castellano) by Xavier Noguer
* es_AR (Argentinian Spanish) by Martin Marrese
* es_MX (Mexican Spanish) by Martin Marrese and Pavel Oropeza
* es_VE (Venezuelan Spanish) by Martin Marrese and Pavel Oropeza
* et (Estonian) by Erkki Saarniit
* fr (French) by Kouber Saparev
* fr_BE (French Belgium) by Kouber Saparev and Philippe Bajoit
* he (Hebrew) by Hadar Porat
* hu_HU (Hungarian) by Nils Homp
* id (Indonesian) by Ernas M. Jamil and Arif Rifai Dwiyanto
* it_IT (Italian) by Filippo Beltramini and Davide Caironi
* lt (Lithuanian) by Laurynas Butkus
* lv (Latvian) by Andrius Virbicianskas
* nl (Dutch) by WHAM van Dinter
* pl (Polish) by Piotr Klaban
* pt_BR (Brazilian Portuguese) by Igor Feghali
* ro_RO (Romanian) by Bogdan Stancescu
* ru (Russian) by Andrey Demenev
* sv (Swedish) by Robin Ericsson
* tr_TR (Turkish) by Shahriyar Imanov
* ua (Ukrainian) by Andrey Demenev and Vital Leshchyk