Update PayNotice.php
Update PayNotice.php

增加增强验签，有增强密钥的话
yylangchen/Sample_Server,AnySDK/Sample_Server,yylangchen/Sample_Server,yylangchen/Sample_Server,AnySDK/Sample_Server,yylangchen/Sample_Server,AnySDK/Sample_Server,AnySDK/Sample_Server,AnySDK/Sample_Server