function pegarIP()
{
    if (!empty($_SERVER['HTTP_CLIENT_IP']))   //check ip from share internet
    {
      $ipvisitante=$_SERVER['HTTP_CLIENT_IP'];
    }
    elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))   //to check ip is pass from proxy
    {
      $ipvisitante=$_SERVER['HTTP_X_FORWARDED_FOR'];
    }
    elseif (!empty($_SERVER['REMOTE_ADDR']))   //to check ip is pass from proxy
    {
      $ipvisitante=$_SERVER['REMOTE_ADDR'];
    }
    else
    {
      $ipvisitante=$_SERVER['HTTP_CF_CONNECTING_IP'];
    }
    return $ipvisitante;
}