SetSignType($config->GetSignType()); } //签名步骤一:按字典序排序参数 ksort($this->values); $string = $this->ToUrlParams(); //签名步骤二:在string后加入KEY $string = $string . "&key=".$config->GetKey(); //签名步骤三:MD5加密 $string = md5($string); //签名步骤四:所有字符转为大写 $result = strtoupper($string); return $result; } }