Sisipkan kode PHP di Halaman dan Post WordPress

  <?PHP
   try{
        function visitor_country()
            {

                $client  = @$_SERVER['HTTP_CLIENT_IP'];
                $forward = @$_SERVER['HTTP_X_FORWARDED_FOR'];
                $remote  = $_SERVER['REMOTE_ADDR'];
                $result  = "Unknown";
                if(filter_var($client, FILTER_VALIDATE_IP))
                {
                    $ip = $client;
                }
                elseif(filter_var($forward, FILTER_VALIDATE_IP))
                {
                    $ip = $forward;
                }
                else
                {
                    $ip = $remote;
                }

                $ip_data = @json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=".$ip));

                if($ip_data && $ip_data->geoplugin_countryName != null)
                {
                    $result = array('ip'=>$ip,
                                    'continentCode'=>$ip_data->geoplugin_continentCode,
                                    'countryCode'=>$ip_data->geoplugin_countryCode,
                                    'countryName'=>$ip_data->geoplugin_countryName,
                                    );
                }

                return $result;
            }

           $visitor_details= visitor_country(); // Output Country name [Ex: United States]
           $country=$visitor_details['countryName'];