PHP从api.met.no读取天气提要

我正试图从中读取JSON

---

但这当然对我不起作用。请你不知道怎么做？感谢您查看原始json返回，您试图获取的项目已被完全掩埋，但您仍然可以轻松获取。数据返回示例：

{
  "type": "Feature",
  "geometry": {
     ...
  },
  "properties": {
    "meta": {
       ...
    },
    "timeseries": [
        {
        "time": "2020-08-18T12:00:00Z",
        "data": {
          "instant": {
            "details": {
              "air_pressure_at_sea_level": 1018.4,
              "air_temperature": 4.7,
              "cloud_area_fraction": 92.2,
              "relative_humidity": 59.3,
              "wind_from_direction": 308.4,
              "wind_speed": 3.8
            }
         },
    ...

您可以通过以下方式访问该特定数据：

$json = file_get_contents($data_url,false,$context);

// This is all you need to turn json into a usable array
$data = json_decode($json,true); 

// Loop on the nested timeseries group:
foreach($data['properties']['timeseries'] as $ts) {
    
    // the time part of it
    $time    = $ts['time'];
    
    // get at it direct
    $var     = $ts['data']['instant']['details']['air_temperature'];

    // shorthand it if you wish:
    $details = $ts['data']['instant']['details'];
    $var     = $details['air_temperature'];
    
    // do whatever else you need to do with it
    echo $var;
    $array_of_temps[] = $var;
    // etc ...

}

---

对不起，我误解了。我需要从[“属性”][“时间序列”][“0-x”][“数据”][“即时”][“详细信息”]获取值。。。按你写的方式，它不起作用。事情是这样的，但我必须分别列出每一个：``echo$data['properties'][“timeseries”][“0”][“data”][“instant”][“details”]；echo$data['properties'][“timeseries”][“1”][“data”][“instant”][“details”]```如果访问

$data['properties'][“timeseries”][“0”][“data”][“instant”][“details”][“details”][/code>，
$data['properties'][“timeseries”][“1”][“data”][“instant”][“details”][“details”][/code>等，你就会得到你想要的东西，那么你应该在哪一个层次上进行循环就很明显了——没有？那么答案的改变有助于解决你的问题吗？
{
  "type": "Feature",
  "geometry": {
     ...
  },
  "properties": {
    "meta": {
       ...
    },
    "timeseries": [
        {
        "time": "2020-08-18T12:00:00Z",
        "data": {
          "instant": {
            "details": {
              "air_pressure_at_sea_level": 1018.4,
              "air_temperature": 4.7,
              "cloud_area_fraction": 92.2,
              "relative_humidity": 59.3,
              "wind_from_direction": 308.4,
              "wind_speed": 3.8
            }
         },
    ...


$json = file_get_contents($data_url,false,$context);

// This is all you need to turn json into a usable array
$data = json_decode($json,true); 

// Loop on the nested timeseries group:
foreach($data['properties']['timeseries'] as $ts) {
    
    // the time part of it
    $time    = $ts['time'];
    
    // get at it direct
    $var     = $ts['data']['instant']['details']['air_temperature'];

    // shorthand it if you wish:
    $details = $ts['data']['instant']['details'];
    $var     = $details['air_temperature'];
    
    // do whatever else you need to do with it
    echo $var;
    $array_of_temps[] = $var;
    // etc ...

}