Horde_Pdf_Writer::_hexToRgb PHP Method

    protected function _hexToRgb($hex)
    {
        if (substr($hex, 0, 1) == '#') {
            $hex = substr($hex, 1);
        }
        if (strlen($hex) == 6) {
            list($r, $g, $b) = array(substr($hex, 0, 2), substr($hex, 2, 2), substr($hex, 4, 2));
        } elseif (strlen($hex) == 3) {
            list($r, $g, $b) = array(substr($hex, 0, 1) . substr($hex, 0, 1), substr($hex, 1, 1) . substr($hex, 1, 1), substr($hex, 2, 1) . substr($hex, 2, 1));
        }
        $r = hexdec($r) / 255;
        $g = hexdec($g) / 255;
        $b = hexdec($b) / 255;
        return array($r, $g, $b);
    }