请求头：Array
(
    [0] => Content-Type: application/json
    [1] => Accept: application/json
    [2] => User-Agent: WechatPay-Combine-Demo/1.0
    [3] => Authorization: WECHATPAY2-SHA256-RSA2048 mchid="1691585538",nonce_str="6qvnxtzQSsJF9H3G5M_YohQN9irxWaQv",signature="jJ+ubCIv7c9lu9YJYkl86p2iNJ++e/yVT0kYZ5s2BKXkfhEtznbUDxWK/f8edWYUFYxhqU2JUbKTSj99aM/NF6w4eHRq+4JZh65x1AlGXz/5Fy3uPCiOqNCfXOSuTiB7Ck1iev03KkvRu7hTB4oh1mFhtPt5Ry3xEXDqL1yIy+jNiQP9+M/IyrU06PhvXj7m25fsl/d13Bxo+3a0rinnlrxttxQgMCahcgxgv9RbSrSmwuS4IqQO0cF12abZh/FKdnM6J3JA/1CmlDr5HKLNctDasoFeJnnMyYiJnYhAVCimmfvGzvrwn2sEdAJ3Nbh5tSJrzEbzSQX5h0c1e99uEw==",timestamp="1787531438",serial_no="15227287AD2BDDDAB9080E3477CE3CD1318E3590"
)

请求体：{"combine_appid":"wx1416d3915c551ed3","combine_mchid":"1691585538","combine_out_trade_no":"combine_20260824083038_8016","scene_info":{"payer_client_ip":"216.73.216.217"},"sub_orders":[{"out_trade_no":"1787531438","mchid":"1722546119","description":"商品描述","amount":{"total_amount":1,"currency":"CNY"},"attach":"子订单1附加信息"}],"notify_url":"https:\/\/demo.wlphp.com\/weixinpay\/v3hedan\/jsapiweixinpay\/notify_url.php","combine_payer_info":{"openid":"o1vEwt5XTvmUiYsaSBiNcJld9ni8"}}
HTTP状态码：400，错误信息：
响应内容：{"code":"INVALID_REQUEST","message":"子单个数超限"}
错误：请求失败，HTTP状态码：400，响应：{"code":"INVALID_REQUEST","message":"子单个数超限"}