json拼接

$data = [
            'deliverInfoFormList'=>[
                [
                    'logisticsInfoFormList' => [
                        [
                            'itemFormList' => $itemFormList,
                            'logisticsCode'=>$logisticsCode,
                            'logisticsName'=>$logisticsName,
                            'logisticsNo'=>$logisticsNo
                        ]
                    ],
                    'orderNum'=>$order_sn,
                ]
            ],

        ];


{
     "deliverInfoFormList": [
          {
               "logisticsInfoFormList": [
                    {
                         "itemFormList": [
                              {
                                   "itemNum": "1",
                                   "orderItemId": "58069044"
                              }
                         ],
                         "logisticsCode": "yuantong",
                         "logisticsName": "圆通速递",
                         "logisticsNo": "YT5101812193199"
                    }
               ],
               "orderNum": "31002012098974614329"
          }
     ]
}