title: Parsing nested JSON to retrieve nested array values
body: <p>I am trying to get some specific fields out of this Json. I have already managed to retrieve the ones in the first level but I need to get some out of the data field. I would like to get an array of the following data fields:</p>
  
  <pre><code>data = [(data artist id, data artist id name, and data rank), (data artist id, data artist id name, and data rank)...] 
  </code></pre>
  
  <p>For example:</p>
  
  <pre><code>data = [(ed61fe981f9143fe82536a0e5e9836f7, Rihanna, 1), (668dfb9383684b79ba603605db21ac51, PSY, 2)..]
  </code></pre>
  
  <p>Any idea how to do this?</p>
  
  <p>The Json is below :</p>
  
  <pre><code>{
  " response": {
  "class": "chart",
  "data": [
      {
          "artist": {
              "class": "artist",
              "id": "ed61fe981f9143fe82536a0e5e9836f7",
              "musicbrainz": "73e5e69d-3554-40d8-8516-00cb38737a1c",
              "name": "Rihanna"
          },
          "rank": 1,
          "value": 42437.6397
      },
      {
          "artist": {
              "class": "artist",
              "id": "668dfb9383684b79ba603605db21ac51",
              "musicbrainz": "f99b7d67-4e63-4678-aa66-4c6ac0f7d24a",
              "name": "PSY"
          },
          "rank": 2,
          "value": 21562.2685
      },
  
     … goes up to about 200 items
     ],
  
       "end_time": 1358553600,
      "id": "396c5b836ce74200b2b5b8ba1df28956",
       "name": "high_flyers_plays_total",
       "next_id": null,
       "now_id": "b857276b34cf488f9a934765c3281af7",
       "period": 86400,
       "previous_id": "cb566393058c4ddfa0b957063fbdc2e3",
       "start_time": 1358467200
       },
     "success": true
    }
  </code></pre>
  
  <p>Here is my php code :</p>
  
  <pre><code>&lt;?php
  
  
    //Chart json url
    $url = "http://website.com";
  
     function get_json($url)
     {
        $ch = curl_init();
  
        //Very short time to get json so long timeout not needed
         $timeout = 5;
         curl_setopt($ch,CURLOPT_URL,$url);
         curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
         curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
         $data = curl_exec($ch);
         curl_close($ch);
         return $data;
     }
  
  
     $json = get_json($url);
  
     $info = json_decode($json,true);
  
  
  
  
  //Prints the outer variables
  
     print "This is the end_time for the chart : ";
     print $info["response"]["end_time"]."&lt;br /&gt;";
  
     print "This is the name for the chart : ";
     print $info["response"]["name"]."&lt;br /&gt;";
  
     print "This is the UUID of the chart : ";
     print $info["response"]["id"]."&lt;br /&gt;";
  
  
     print "This is the period for the chart : ";
     print $info["response"]["period"]."&lt;br /&gt;";
  
     /* gets the json data from the URL */
  
  
  
  
  ?&gt;
  </code></pre>