Notice: Undefined index: out_trade_no in D:\phpStudy\WWW\order2\wxzf\demo\refund.php on line 15

Notice: Undefined index: refund_fee in D:\phpStudy\WWW\order2\wxzf\demo\refund.php on line 17

Notice: Undefined index: out_refund_no in D:\phpStudy\WWW\order2\wxzf\demo\refund.php on line 19

Notice: Undefined index: money in D:\phpStudy\WWW\order2\wxzf\demo\refund.php on line 21

Notice: Undefined index: transaction_id in D:\phpStudy\WWW\order2\wxzf\WxPayPubHelper\WxPayPubHelper.php on line 442
退款申请接口中，out_trade_no、transaction_id至少填一个！