tFPDF::_UTF8toUTF16 PHP Метод

    function _UTF8toUTF16($s)
    {
        // Convert UTF-8 to UTF-16BE with BOM
        $res = "þÿ";
        $nb = strlen($s);
        $i = 0;
        while ($i < $nb) {
            $c1 = ord($s[$i++]);
            if ($c1 >= 224) {
                // 3-byte character
                $c2 = ord($s[$i++]);
                $c3 = ord($s[$i++]);
                $res .= chr((($c1 & 0xf) << 4) + (($c2 & 0x3c) >> 2));
                $res .= chr((($c2 & 0x3) << 6) + ($c3 & 0x3f));
            } elseif ($c1 >= 192) {
                // 2-byte character
                $c2 = ord($s[$i++]);
                $res .= chr(($c1 & 0x1c) >> 2);
                $res .= chr((($c1 & 0x3) << 6) + ($c2 & 0x3f));
            } else {
                // Single-byte character
                $res .= "" . chr($c1);
            }
        }
        return $res;
    }