private function _socialCurl($url)
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: text/json'));
        $result = json_decode(curl_exec($ch), true);
        curl_close($ch); 

        return $result;
    }