<?php
class Metier_Util_Chiffre
{
    private static $tabChiffresEnLEttres = array(
        0   => "zéro",
        1   => "un",
        2   => "deux",
        3   => "trois",
        4   => "quatre",
        5   => "cinq",
        6   => "six",
        7   => "sept",
        8   => "huit",
        9   => "neuf",
        10  => "dix",
        11  => "onze",
        12  => "douze",
        13  => "treize",
        14  => "quatorze",
        15  => "quinze",
        16  => "seize",
        17  => "dix sept",
        18  => "dix huit",
        19  => "dix neuf",
        20  => "vingt",
        21  => "vingt et un",
        22  => "vingt deux",
        23  => "vingt trois",
        24  => "vingt quatre",
        25  => "vingt cinq",
        26  => "vingt six",
        27  => "vingt sept",
        28  => "vingt huit",
        29  => "vingt neuf",
        30  => "trente",
        40  => "quarante",
        50  => "cinquante",
        60  => "soixante",
        70  => "soixante dix",
        80  => "quatre vingt",
        90  => "quatre vingt dix",
    );

    public static function ChiffresEnLettres($chiffre)
    {
        return array_search($chiffre, self::$tabChiffresEnLEttres);
    }
}