https://www.freeformatter.com/json-formatter.html

$chart = '

  {
   "title": {
      "text": "Solar Employment Growth by Sector, 2010-2016"
   },
   "subtitle": {
      "text": "Source: thesolarfoundation.com"
   },
   "yAxis": {
      "title": {
         "text": "Number of Employees"
      }
   },
   "legend": {
      "layout": "vertical",
      "align": "right",
      "verticalAlign": "middle"
   },
   "plotOptions": {
      "series": {
         "label": {
            "connectorAllowed": false
         },
         "pointStart": 2010
      }
   },
   "series": [
      {
         "name": "Installation",
         "data": [
            43934,
            52503,
            57177,
            69658,
            97031,
            119931,
            137133,
            154175
         ]
      },
      {
         "name": "Manufacturing",
         "data": [
            24916,
            24064,
            29742,
            29851,
            32490,
            30282,
            38121,
            40434
         ]
      },
      {
         "name": "Sales & Distribution",
         "data": [
            11744,
            17722,
            16005,
            19771,
            20185,
            24377,
            32147,
            39387
         ]
      },
      {
         "name": "Project Development",
         "data": [
            null,
            null,
            7988,
            12169,
            15112,
            22452,
            34400,
            34227
         ]
      },
      {
         "name": "Other",
         "data": [
            12908,
            5948,
            8105,
            11248,
            8989,
            11816,
            18274,
            18111
         ]
      }
   ],
   "responsive": {
      "rules": [
         {
            "condition": {
               "maxWidth": 500
            },
            "chartOptions": {
               "legend": {
                  "layout": "horizontal",
                  "align": "center",
                  "verticalAlign": "bottom"
               }
            }
         }
      ]
   }
}
        ';

//$json = json_decode($chart, $assoc=true);
// echo '
';
   // var_export($json);
   // echo '
';

  //  exit();