How do I ask in php which radio button has been selected- Moodle 3.0

How do I ask in php which radio button has been selected- Moodle 3.0

by Manuel Antonio Rivera Socarrás -
Number of replies: 0 

Hello community, I am using moodle 3.0 and I want to ask in mod_form.php which of the radiobuttons that engo was selected and how I captured the value and the id or all properties of the radiobutton?

Thanks for everything
This is what I have done
$dataId = array();
$i = 0;

$mform->addElement('header', 'fmfieldset', 'Busqueda por defecto');

$radio_group=array();

foreach ($resultados as $object) {

    $datos = $object->getDoc();

    $dataId[$i] = $datos['id'];

    $i++;

    $radio_group[$i] =& $mform->createElement('radio', 'ratingtime', "", "Datos: autor=" . $datos['autor_t'] . " descripcion=" . $datos['descripcion_t'] . " id=" . $datos['id'] . " titulo=" . $datos['titulo_t'] . "<br>");

}

$mform->addGroup($radio_group, 'radio_group', 'Objeto a Añadir', ' ', false);

$mform->disabledIf('radio_group', 'radionabled');
$radio_selected = null;
$id_necesario = null;
foreach ($radio_group as $radiobutton){
    if ($radiobutton['checked']=='checked'){
        $radio_selected = $radiobutton;
        $id_necesario = $dataId[$radio_selected['id']];
    }
}
echo $radio_selected . $radiobutton. $id_necesario;


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