Get instagram data using php and curl

php-instagram

protected function instagram(){
        $access_token = 'xxxxxx';
        $fullendpoint = 'https://api.instagram.com/v1/users/self/media/recent/';
        $endpoint = 'users/self/media/recent/';
        $params = array(
          'access_token' => $access_token,
          'count'   => '10',
           'min_tag_id' => '',
           'max_tag_id' => ''
        );
        $secret = 'xxxxxxxxx';
        $sig = $this->generate_sig($endpoint, $params, $secret);
        $return = $this->getInsta($fullendpoint."?access_token=".$access_token.'&sig='.$sig);
        $instagramPost = json_decode($return);
        return $instagramPost;

    }
    protected function generate_sig($endpoint, $params, $secret) {
          $sig = $endpoint;
          ksort($params);
          foreach ($params as $key => $val) {
            $sig .= "|$key=$val";
          }
        return hash_hmac('sha256', $sig, $secret, false);
    }
    protected function getInsta($api_url){
                $ch = curl_init();
                curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
                curl_setopt($ch,CURLOPT_URL,$api_url);
                curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
                curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.13 (KHTML, like Gecko) Chrome/0.A.B.C Safari/525.13");
                $data = curl_exec($ch);
                curl_close($ch);
                return $data;
    }