public static function showComplexImage($code, $words = 20, $codeNum = 4, $codeType = 2, $width = 160, $height = 90, $fontSize = 36, $tip = '')
{
$captcha = new YucCaptcha($width, $height, $codeNum, $codeType, $fontSize);
$captcha->createRes();
$captcha->bgColor();
$captcha->fillWords($words);
$captcha->CreateTip($tip);
$captcha->writeText($code);
$captcha->bgBorder();
$captcha->output();
return $captcha->getCodeResult();
}
