Making a registration system

[eluser]GonzaFY[/eluser]
[quote author="InsiteFX" date="1360477936"]Try this:

Code:

function Datos()
{
   $CI =& get_instance();

   $datos = array(
        'nombre'   => $CI->session->userdata('nombre'),
        'apellido' => $CI->session->userdata('apellido')
    );

    return $datos;
}

[/quote]

Works perfectly! Thanks ...

What is better? Make my registration system in a model or in a library?
^^!