Notice: Undefined index: out_refund_no in D:\phpStudy\WWW\order2\wxzf\demo\refund_query.php on line 12

Notice: Undefined index: out_trade_no in D:\phpStudy\WWW\order2\wxzf\WxPayPubHelper\WxPayPubHelper.php on line 497

Notice: Undefined index: transaction_id in D:\phpStudy\WWW\order2\wxzf\WxPayPubHelper\WxPayPubHelper.php on line 498

Notice: Undefined index: refund_id in D:\phpStudy\WWW\order2\wxzf\WxPayPubHelper\WxPayPubHelper.php on line 499
退款查询接口中，out_refund_no、out_trade_no、transaction_id、refund_id四个参数必填一个！