Php 如何在insights表中按国家对page_fan_城市值进行分组

首先我很抱歉我的英语不好

我通过图形api获取页面统计信息。（见解/佩奇·范·城）

下面是我的查询和facebook的回复

{
   "data": [
      {
         "id": "147197862002528/insights/page_fans_city/lifetime",
         "name": "page_fans_city",
         "period": "lifetime",
         "values": [
            {
               "value": {
                  "istanbul": 20017,
                  "ankara": 9763,
                  "izmir": 7549,
                  "bursa": 3350,
                  "adana": 2949,
                  "antalya": 2687,
                  "konya": 2375,
                  "izmit": 2229,
                  "mersin": 1942,
                  "samsun": 1861,
                  "kayseri": 1444,
                  "maltepe": 1403,
                  "trabzon": 1327,
                  "manisa": 1163,
                  "eskisehir": 1040,
                  "baku": 1015,
                  "denizli": 986,
                  "mugla": 978,
                  "erzurum": 809
               },
               "end_time": "2011-12-17T08:00:00+0000"
            }
         ],
         "description": "Lifetime Aggregated Facebook location data, sorted by city, about the people who like your Page. (Total Count)"
      }
   ],
   "paging": {
      "previous": "https://graph.facebook.com/147197862002528/insights/page_fans_city/lifetime/?access_token=HIDDEN&since=1323682381&until=1323941581",
      "next": "https://graph.facebook.com/147197862002528/insights/page_fans_city/lifetime/?access_token=HIDDEN&since=1324200781&until=1324459981"
   }
}

---

我只得到这个信息。我想要城市，那就是乡村。如何获取国家的名称似乎是一个古老的问题，但为了澄清问题，您可以将该JSON对象指定给一个字符串，然后像这样递归以获取国家：

$response = json_decode($json);

foreach((array)$response->data[0]->values[0]->value as $key => $val) {
        print $key."\n";
}