replace Cyrillic chars to Latin lower PHP

    public static function replaceCyrillic ($text)
    {
        $chars = array(
            'ґ'=>'g','ё'=>'e','є'=>'e','ї'=>'i','і'=>'i',
            'а'=>'a', 'б'=>'b', 'в'=>'v',
            'г'=>'g', 'д'=>'d', 'е'=>'e', 'ё'=>'e',
            'ж'=>'j', 'з'=>'z', 'и'=>'i', 'й'=>'i',
            'к'=>'k', 'л'=>'l', 'м'=>'m', 'н'=>'n',
            'о'=>'o', 'ө'=>'u', 'п'=>'p', 'р'=>'r', 'с'=>'s',
            'т'=>'t', 'у'=>'u', 'ү'=>'u', 'ф'=>'f', 'х'=>'h',
            'ц'=>'ts', 'ч'=>'ch', 'ш'=>'sh', 'щ'=>'sch',
            'ы'=>'y', 'э'=>'e', 'ю'=>'yu', 'я'=>'ya', 'é'=>'e', '&'=>'and',
            'ь'=>'', 'ъ' => '',
            'А'=>'a', 'Б'=>'b', 'В'=>'v',
            'Г'=>'g', 'Д'=>'d', 'Е'=>'e', 'Ё'=>'e',
            'Ж'=>'j', 'З'=>'z', 'И'=>'i', 'Й'=>'i',
            'К'=>'k', 'Л'=>'l', 'М'=>'m', 'Н'=>'n',
            'О'=>'o', 'Ө'=>'u', 'П'=>'p', 'Р'=>'r', 'С'=>'s',
            'Т'=>'t', 'У'=>'u', 'Ү'=>'u', 'Ф'=>'f', 'Х'=>'h',
            'Ц'=>'ts', 'Ч'=>'ch', 'Ш'=>'sh', 'Щ'=>'sch',
            'Ы'=>'y', 'Э'=>'e', 'Ю'=>'yu', 'Я'=>'ya',
            'Ь'=>'', 'Ъ' => '',
        );

        return strtr($text, $chars);
    }