PHP中一种sign计算方法

1 <?php
2 function getsign($data,$key){
3 $key=MD5("KEY_".$key."_K");
4 $sign=MD5(MD5($key.$data));
5 return $sign;
6 
7 }
8 
9 echo "?u=123456&p=".getsign("test123","key01_PasswordEncryptKey")."&s=".getsign("u=123456&p=".getsign("test123","key01_PasswordEncryptKey"),"key02_SignEncryptKey");

1 ?u=123456&p=30413677987b25a9b4dd49205eb89a93&s=1c52ae0e7d6d31e311ff408eeadeaff5