Contao\FormRadioButton::getOptions PHP Method

    protected function getOptions()
    {
        $arrOptions = array();
        $blnHasGroups = false;
        foreach ($this->arrOptions as $i => $arrOption) {
            if ($arrOption['group']) {
                if ($blnHasGroups) {
                    $arrOptions[] = array('type' => 'group_end');
                }
                $arrOptions[] = array('type' => 'group_start', 'label' => \StringUtil::specialchars($arrOption['label']));
                $blnHasGroups = true;
            } else {
                $arrOptions[] = array_replace($arrOption, array('type' => 'option', 'name' => $this->strName, 'id' => $this->strId . '_' . $i, 'value' => $arrOption['value'], 'checked' => $this->isChecked($arrOption), 'attributes' => $this->getAttributes(), 'label' => $arrOption['label']));
            }
        }
        if ($blnHasGroups) {
            $arrOptions[] = array('type' => 'group_end');
        }
        return $arrOptions;
    }