How to get total page likes from facebook graph php api v2.6

I am trying to get total page likes using following method

$response = $fb->get('/{page_id}/insights/page_fans', $_SESSION['fb_access_token']);
         $data = $response->getDecodedBody();

but i am getting output like

{
  "data": [
    {
      "name": "page_fans",
      "period": "lifetime",
      "values": [
        {
          "value": 4950,
          "end_time": "2016-06-04T07:00:00+0000"
        },
        {
          "value": 4951,
          "end_time": "2016-06-05T07:00:00+0000"
        },
        {
          "value": 4954,
          "end_time": "2016-06-06T07:00:00+0000"
        }
      ],
      "title": "Lifetime Total Likes",
      "description": "Lifetime: The total number of people who have liked your Page. (Unique Users)",
      "id": "5440223423423f216075/insights/page_fans/lifetime"
    }
  ],
  "paging": {
    "previous": "https://graph.facebook.com/v2.6/123/insights/page_fans?access_token=EAACEdEose0cBAPZCXGPTTelvenkGYIwiZAbT4N26ZB97KwDvbi9TfoyvkeET8WLiSbVHS7k3FsQL5w5DFJK5mAus0XA1123TPaPBEpxhdUq123ZAx1r7B3wIVjJVjLk2jrVu1M8apfBndmz9FUviAzWRpR4vHRgBYcSxEn4JXcioASljYLwZDZD&debug=all&format=json&method=get&pretty=0&suppress_http_code=1&since=1464617613&until=1464876813",
    "next": "https://graph.facebook.com/v2.6/123/insights/page_fans?access_token=EAACEdEosDe0cBAPZCXG123PTTelvenkGYIwiZAbT4N26ZB97KwDvbi9TfoyvkeET8WLiSbVHS7k3FsQL5w5JK5mAus0XATPaPBEpxhdUqZAx1r7B3wIVjJVjLk2jrVu1M8apfBndmz9FUviAzWRpR4vHRgBYcSxEn4JXcioASljYLwZDZD&debug=all&format=json&method=get&pretty=0&suppress_http_code=1&since=1465136013&until=1465395213"
  }
}

but i need total likes of pages.how can we do this

old way using FQL - select fan_count from page where page_id = page_id; but i am trying using latest api v2.6

[from comments] i need total page likes which is showing on facebook page

Well then you should not have been using the insights edge to begin with, but just

/page-id?fields=fan_count