Method radiolist

/**
 * Generates an HTML radio list.
 *
 * @param   array    $data       An array of objects
 * @param   string   $name       The value of the HTML name attribute
 * @param   string   $attribs    Additional HTML attributes for the `<select>` tag
 * @param   mixed    $optKey     The key that is selected
 * @param   string   $optText    The name of the object variable for the option value
 * @param   string   $selected   The name of the object variable for the option text
 * @param   boolean  $idtag      Value of the field id or null by default
 * @param   boolean  $translate  True if options will be translated
 *
 * @return  string  HTML for the select list
 *
 * @since   1.5
 */
public static function radiolist($data, $name, $attribs = null, $optKey = 'value', $optText = 'text', $selected = null, $idtag = false, $translate = false)
{
    if (is_array($attribs)) {
        $attribs = ArrayHelper::toString($attribs);
    }
    $id_text = $idtag ?: $name;
    $html = '<div class="controls">';
    foreach ($data as $obj) {
        $html .= '<div class="form-check form-check-inline">';
        $k = $obj->{$optKey};
        $t = $translate ? Text::_($obj->{$optText}) : $obj->{$optText};
        $id = isset($obj->id) ? $obj->id : null;
        $extra = '';
        $id = $id ? $obj->id : $id_text . $k;
        if (is_array($selected)) {
            foreach ($selected as $val) {
                $k2 = is_object($val) ? $val->{$optKey} : $val;
                if ($k == $k2) {
                    $extra .= ' selected="selected" ';
                    break;
                }
            }
        } else {
            $extra .= (string) $k === (string) $selected ? ' checked="checked" ' : '';
        }
        $html .= '<input type="radio" class="form-check-input" name="' . $name . '" id="' . $id . '" value="' . $k . '" ' . $extra . $attribs . '>';
        $html .= '<label for="' . $id . '" class="form-check-label" id="' . $id . '-lbl">' . $t . '</label>';
        $html .= '</div>';
    }
    $html .= '</div>';
    return $html;
}