$pay\_memberid, "pay\_orderid" => $pay\_orderid, "pay\_amount" => $pay\_amount, "pay\_applydate" => $pay\_applydate, "pay\_bankcode" => $pay\_bankcode, "pay\_notifyurl" => $pay\_notifyurl, "pay\_callbackurl" => $pay\_callbackurl, ); ksort($native); $md5str = ""; foreach ($native as $key => $val) { $md5str = $md5str . $key . "=" . $val . "&"; } //作者主页 [https://www.bz80.com](https://www.bz80.com) echo '签名串：';echo($md5str . "key=" . $Md5key); $sign = strtoupper(md5($md5str . "key=" . $Md5key)); $native\["pay\_md5sign"\] = $sign; echo '
得到签名后，转换为大写字母。
'; echo $sign; ?>