public static function showImgDesc($word, $tip = '', $width = 160, $height = 90, $fontSize = 30) { $captcha = new YucCaptcha($width, $height, 5, 1, $fontSize); $captcha->createRes(); $captcha->bgColor(); $captcha->writeDes($word); $captcha->CreateTip($tip); $captcha->bgBorder(); $captcha->output(); }