> For the complete documentation index, see [llms.txt](https://xoops.gitbook.io/xoops-modules-cookbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xoops.gitbook.io/xoops-modules-cookbook/form-classes/forms/xoopsgroupformcheckbox.md).

# XoopsGroupFormCheckBox

XoopsGroupFormCheckBox renders checkbox options for a group permission form

![](https://879096944-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M5_mFcvcxsA3M1QhbWd%2Fsync%2F6f935f381d3eb638abafcc4db547f393a989c78a.png?generation=1609473963933624\&alt=media)

## Definition

```php
class XoopsGroupFormCheckBox extends XoopsFormElement
{
    /**
     * Pre-selected value(s)
     *
     * @var array ;
     */
    public $_value = array();
    /**
     * Group ID
     *
     * @var int
     */
    public $_groupId;
    /**
     * Option tree
     *
     * @var array
     */
    public $_optionTree = array();

    /**
     * Constructor
     * @param      $caption
     * @param      $name
     * @param      $groupId
     * @param null $values
     */
    public function __construct($caption, $name, $groupId, $values = null)
    {
        $this->setCaption($caption);
        $this->setName($name);
        if (isset($values)) {
            $this->setValue($values);
        }
        $this->_groupId = $groupId;
    }
```