public static function getFKCheckbox()
{
$checked = self::isForeignKeyCheck();
$html = '<input type="hidden" name="fk_checks" value="0" />';
$html .= '<input type="checkbox" name="fk_checks"' . ' id="fk_checks" value="1"' . ($checked ? ' checked="checked"' : '') . '/>';
$html .= '<label for="fk_checks">' . __('Enable foreign key checks') . '</label>';
return $html;
}