使用PHP将URL响应中的嵌套JSON转换为平面JSON

我试图实现的是动态地直接展平JSON嵌套响应。我从API URL得到的响应是

 {   "currency" : "USD",   "results" : [ {
 "itineraries" : [ {
   "outbound" : {
     "duration" : "17:50",
     "flights" : [ {
       "departs_at" : "2018-10-15T08:45",
       "arrives_at" : "2018-10-15T11:00",
       "origin" : {
         "airport" : "IST",
         "terminal" : "I"
       },
       "destination" : {
        "airport" : "LHR",
        "terminal" : "5"
      },
      "marketing_airline" : "BA",
      "operating_airline" : "BA",
      "flight_number" : "675",
      "aircraft" : "320",
      "booking_info" : {
        "travel_class" : "ECONOMY",
        "booking_code" : "S",
        "seats_remaining" : 7
      }
    }, {
      "departs_at" : "2018-10-15T16:55",
      "arrives_at" : "2018-10-15T19:35",
      "origin" : {
        "airport" : "LHR",
        "terminal" : "5"
      },
      "destination" : {
        "airport" : "BOS",
        "terminal" : "E"
      },
      "marketing_airline" : "BA",
      "operating_airline" : "BA",
      "flight_number" : "203",
      "aircraft" : "777",
      "booking_info" : {
        "travel_class" : "ECONOMY",
        "booking_code" : "N",
        "seats_remaining" : 9
      }
    } ]
  },
  "inbound" : {
    "duration" : "14:00",
    "flights" : [ {
      "departs_at" : "2018-10-21T19:25",
      "arrives_at" : "2018-10-22T07:00",
      "origin" : {
        "airport" : "BOS",
        "terminal" : "E"
      },
      "destination" : {
        "airport" : "LHR",
        "terminal" : "5"
      },
      "marketing_airline" : "BA",
      "operating_airline" : "BA",
      "flight_number" : "212",
      "aircraft" : "388",
      "booking_info" : {
        "travel_class" : "ECONOMY",
        "booking_code" : "N",
        "seats_remaining" : 9
      }
    }, {
      "departs_at" : "2018-10-22T10:25",
      "arrives_at" : "2018-10-22T16:25",
      "origin" : {
        "airport" : "LHR",
        "terminal" : "5"
      },
      "destination" : {
        "airport" : "IST",
        "terminal" : "I"
      },
      "marketing_airline" : "BA",
      "operating_airline" : "BA",
      "flight_number" : "676",
      "aircraft" : "320",
      "booking_info" : {
        "travel_class" : "ECONOMY",
        "booking_code" : "S",
        "seats_remaining" : 9
      }
    } ]
  }
} ],
"fare" : {
  "total_price" : "486.17",
  "price_per_adult" : {
    "total_fare" : "486.17",
    "tax" : "343.17"
  },
  "restrictions" : {
    "refundable" : false,
    "change_penalties" : true
  }
}   }, {
"itineraries" : [ {
  "outbound" : {
    "duration" : "10:55",
    "flights" : [ {
      "departs_at" : "2018-10-15T14:35",
      "arrives_at" : "2018-10-15T18:30",
      "origin" : {
        "airport" : "IST",
        "terminal" : "I"
      },
      "destination" : {
        "airport" : "BOS",
        "terminal" : "E"
      },
      "marketing_airline" : "TK",
      "operating_airline" : "TK",
      "flight_number" : "81",
      "aircraft" : "333",
      "booking_info" : {
        "travel_class" : "ECONOMY",
        "booking_code" : "W",
        "seats_remaining" : 9
      }
    } ]
  },
  "inbound" : {
    "duration" : "09:35",
    "flights" : [ {
      "departs_at" : "2018-10-21T23:35",
      "arrives_at" : "2018-10-22T16:10",
      "origin" : {
        "airport" : "BOS",
        "terminal" : "E"
      },
      "destination" : {
        "airport" : "IST",
        "terminal" : "I"
      },
      "marketing_airline" : "TK",
      "operating_airline" : "TK",
      "flight_number" : "82",
      "aircraft" : "333",
      "booking_info" : {
        "travel_class" : "ECONOMY",
        "booking_code" : "W",
        "seats_remaining" : 9
      }
    } ]
  }
} ],
"fare" : {
  "total_price" : "528.31",
  "price_per_adult" : {
    "total_fare" : "528.31",
    "tax" : "344.31"
  },
  "restrictions" : {
    "refundable" : false,
    "change_penalties" : true
  }
}   } ] }

我基本上需要的是以一种简单的方式格式化它，这样所有的东西都在同一个层次上

我得到的响应文件是这样的 $json_url=file_get_contents（'https://domain/api'）； 如果我打印它，它工作得很好，但是很难将结果简化为一个简单的JSON响应

编辑 差不多

 {
    "currency": "USD",
    "results[0].itineraries[0].outbound.duration": "17:50",
    "results[0].itineraries[0].outbound.flights[0].departs_at": "2018-10-15T08:45",
    "results[0].itineraries[0].outbound.flights[0].arrives_at": "2018-10-15T11:00",
    "results[0].itineraries[0].outbound.flights[0].origin.airport": "IST",
    "results[0].itineraries[0].outbound.flights[0].origin.terminal": "I",
    "results[0].itineraries[0].outbound.flights[0].destination.airport": "LHR",
    "results[0].itineraries[0].outbound.flights[0].destination.terminal": "5",
    "results[0].itineraries[0].outbound.flights[0].marketing_airline": "BA",
    "results[0].itineraries[0].outbound.flights[0].operating_airline": "BA",
    "results[0].itineraries[0].outbound.flights[0].flight_number": "675",
    "results[0].itineraries[0].outbound.flights[0].aircraft": "320",
    "results[0].itineraries[0].outbound.flights[0].booking_info.travel_class": "ECONOMY",
    "results[0].itineraries[0].outbound.flights[0].booking_info.booking_code": "S",
    "results[0].itineraries[0].outbound.flights[0].booking_info.seats_remaining": 7,
    "results[0].itineraries[0].outbound.flights[1].departs_at": "2018-10-15T16:55",
    "results[0].itineraries[0].outbound.flights[1].arrives_at": "2018-10-15T19:35",
    "results[0].itineraries[0].outbound.flights[1].origin.airport": "LHR",
    "results[0].itineraries[0].outbound.flights[1].origin.terminal": "5",
    "results[0].itineraries[0].outbound.flights[1].destination.airport": "BOS",
    "results[0].itineraries[0].outbound.flights[1].destination.terminal": "E",
    "results[0].itineraries[0].outbound.flights[1].marketing_airline": "BA",
    "results[0].itineraries[0].outbound.flights[1].operating_airline": "BA",
    "results[0].itineraries[0].outbound.flights[1].flight_number": "203",
    "results[0].itineraries[0].outbound.flights[1].aircraft": "777",
    "results[0].itineraries[0].outbound.flights[1].booking_info.travel_class": "ECONOMY",
    "results[0].itineraries[0].outbound.flights[1].booking_info.booking_code": "N",
    "results[0].itineraries[0].outbound.flights[1].booking_info.seats_remaining": 9,
    "results[0].itineraries[0].inbound.duration": "14:00",
    "results[0].itineraries[0].inbound.flights[0].departs_at": "2018-10-21T19:25",
    "results[0].itineraries[0].inbound.flights[0].arrives_at": "2018-10-22T07:00",
    "results[0].itineraries[0].inbound.flights[0].origin.airport": "BOS",
    "results[0].itineraries[0].inbound.flights[0].origin.terminal": "E",
    "results[0].itineraries[0].inbound.flights[0].destination.airport": "LHR",
    "results[0].itineraries[0].inbound.flights[0].destination.terminal": "5",
    "results[0].itineraries[0].inbound.flights[0].marketing_airline": "BA",
    "results[0].itineraries[0].inbound.flights[0].operating_airline": "BA",
    "results[0].itineraries[0].inbound.flights[0].flight_number": "212",
    "results[0].itineraries[0].inbound.flights[0].aircraft": "388",
    "results[0].itineraries[0].inbound.flights[0].booking_info.travel_class": "ECONOMY",
    "results[0].itineraries[0].inbound.flights[0].booking_info.booking_code": "N",
    "results[0].itineraries[0].inbound.flights[0].booking_info.seats_remaining": 9,
    "results[0].itineraries[0].inbound.flights[1].departs_at": "2018-10-22T10:25",
    "results[0].itineraries[0].inbound.flights[1].arrives_at": "2018-10-22T16:25",
    "results[0].itineraries[0].inbound.flights[1].origin.airport": "LHR",
    "results[0].itineraries[0].inbound.flights[1].origin.terminal": "5",
    "results[0].itineraries[0].inbound.flights[1].destination.airport": "IST",
    "results[0].itineraries[0].inbound.flights[1].destination.terminal": "I",
    "results[0].itineraries[0].inbound.flights[1].marketing_airline": "BA",
    "results[0].itineraries[0].inbound.flights[1].operating_airline": "BA",
    "results[0].itineraries[0].inbound.flights[1].flight_number": "676",
    "results[0].itineraries[0].inbound.flights[1].aircraft": "320",
    "results[0].itineraries[0].inbound.flights[1].booking_info.travel_class": "ECONOMY",
    "results[0].itineraries[0].inbound.flights[1].booking_info.booking_code": "S",
    "results[0].itineraries[0].inbound.flights[1].booking_info.seats_remaining": 9,
    "results[0].fare.total_price": "486.17",
    "results[0].fare.price_per_adult.total_fare": "486.17",
    "results[0].fare.price_per_adult.tax": "343.17",
    "results[0].fare.restrictions.refundable": false,
    "results[0].fare.restrictions.change_penalties": true
    }
    {
    "currency": "USD",
    "results[1].itineraries[0].outbound.duration": "10:55",
    "results[1].itineraries[0].outbound.flights[0].departs_at": "2018-10-15T14:35",
    "results[1].itineraries[0].outbound.flights[0].arrives_at": "2018-10-15T18:30",
    "results[1].itineraries[0].outbound.flights[0].origin.airport": "IST",
    "results[1].itineraries[0].outbound.flights[0].origin.terminal": "I",
    "results[1].itineraries[0].outbound.flights[0].destination.airport": "BOS",
    "results[1].itineraries[0].outbound.flights[0].destination.terminal": "E",
    "results[1].itineraries[0].outbound.flights[0].marketing_airline": "TK",
    "results[1].itineraries[0].outbound.flights[0].operating_airline": "TK",
    "results[1].itineraries[0].outbound.flights[0].flight_number": "81",
    "results[1].itineraries[0].outbound.flights[0].aircraft": "333",
    "results[1].itineraries[0].outbound.flights[0].booking_info.travel_class": "ECONOMY",
    "results[1].itineraries[0].outbound.flights[0].booking_info.booking_code": "W",
    "results[1].itineraries[0].outbound.flights[0].booking_info.seats_remaining": 9,
    "results[1].itineraries[0].inbound.duration": "09:35",
    "results[1].itineraries[0].inbound.flights[0].departs_at": "2018-10-21T23:35",
    "results[1].itineraries[0].inbound.flights[0].arrives_at": "2018-10-22T16:10",
    "results[1].itineraries[0].inbound.flights[0].origin.airport": "BOS",
    "results[1].itineraries[0].inbound.flights[0].origin.terminal": "E",
    "results[1].itineraries[0].inbound.flights[0].destination.airport": "IST",
    "results[1].itineraries[0].inbound.flights[0].destination.terminal": "I",
    "results[1].itineraries[0].inbound.flights[0].marketing_airline": "TK",
    "results[1].itineraries[0].inbound.flights[0].operating_airline": "TK",
    "results[1].itineraries[0].inbound.flights[0].flight_number": "82",
    "results[1].itineraries[0].inbound.flights[0].aircraft": "333",
    "results[1].itineraries[0].inbound.flights[0].booking_info.travel_class": "ECONOMY",
    "results[1].itineraries[0].inbound.flights[0].booking_info.booking_code": "W",
    "results[1].itineraries[0].inbound.flights[0].booking_info.seats_remaining": 9,
    "results[1].fare.total_price": "528.31",
    "results[1].fare.price_per_adult.total_fare": "528.31",
    "results[1].fare.price_per_adult.tax": "344.31",
    "results[1].fare.restrictions.refundable": false,
    "results[1].fare.restrictions.change_penalties": true
}

---

谢谢

这里有一个复制您期望的json格式的方法。
我从中借用了一些代码，并稍微做了一些调整，以使其为您工作，请记住对其进行升级表决

我使用注释中的代码创建数组的货币部分。
然后我将每个新的子数组部分传递给代码，该代码将回溯路径并使其成为json代码

$arr = json_decode($str,true);  // $str is the json
foreach($arr['results'] as $key => $res){
    $new[$key]['currency'] = $arr['currency'];
    $new[$key]['results'][] = $res;
}
foreach($new as $n){
    $json[] = listArrayRecursive($n);
}
$jsonNew = "[" . implode(",", $json) . "]"; // this is the new json formed as you want it
var_dump(json_decode($jsonNew), true); // for debug purpose test it




function listArrayRecursive($someArray) {
    $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($someArray), RecursiveIteratorIterator::SELF_FIRST);
    $str = "{";
    foreach ($iterator as $k => $v) {

        // Not at end: show key only
        if ($iterator->hasChildren()) {

        } else {
            for ($p = array(), $i = 0, $z = $iterator->getDepth(); $i <= $z; $i++) {
                $p[] = $iterator->getSubIterator($i)->key();
            }
            $path = implode('.', $p);
            $str .= '"' . $path . '": "' .$v . '"' . ",";
        }
    }
    $str = substr($str,0,-1); // remove trailing comma that makes json invalid
    $str .= "}\n";
    return $str;
}

$arr=json_decode（$str，true）；//$str是json
foreach（$arr['results']作为$key=>$res）{
$new[$key]['currency']=$arr['currency']；
$new[$key]['results'][]=$res；
}
foreach（$n新币）{
$json[]=listArrayRecursive（$n）；
}
$jsonNew=“[”.内爆（“，”，$json）。“]”；//这是您想要的新json格式
var_dump（json_decode（$jsonNew），true）；//出于调试目的，请测试它
函数listArrayRecursive（$someArray）{
$iterator=new recursiveiterator（new RecursiveArrayIterator（$someArray），recursiveiterator:：SELF_FIRST）；
$str=“{”；
foreach（$k=>v的迭代器）{
//不在末尾：仅显示关键点
如果（$iterator->hasChildren（））{
}否则{
对于（$p=array（），$i=0，$z=$iterator->getDepth（）；$i getSubIterator（$i）->key（）；
}
$path=内爆（'.'，$p）；
$str.='''.$path'.''：“'.$v'.'.'”，“；
}
}
$str=substr（$str，0，-1）；//删除使json无效的尾部逗号
$str.=“}\n”；
返回$str；
}

---

这是不可能的，如果你将Json/数组展平，你将如何访问例如“departies\u at”？以及哪个“departies\u at”它是否会回复？是否要将其转换为一维数组？@Andreas是的，也就是说，重复的键将被覆盖。我不明白您尝试这样做的原因或原因。您的原始问题无法回答，因此要么问题应该关闭，要么您应该将其编辑为可以的状态answered@Andreas操作要将键的值浓缩为键，然后将此值分配给长键。

results[0]。investures[0]。outbound.duration

作为键，

17:50

value。这看起来已经很好了。只需一件事。有没有办法删除数组（2）{[0]=>object（stdClass）#1（60）并直接从{[“currency”]=>string（3）“USD”开始我的意思是输出像[{}，{}]不是这样吗？或者你又在要求一个平面数组，其中有同名的键？它不起作用！相信我。如果你看这个：每个$json元素都是

{}

，它们用逗号内爆。

{}，{}

然后连接使它成为

[{}，{}]

为什么要在那里进行Json编码？这有什么意义？很明显，数组之间没有逗号，因为代码稍后会用逗号内爆。在数组中添加逗号只会让事情变得更困难。