Arguments

Name	Type	Default	Description
id	string		A unique ID. This ID will be used to get the value
type	string	checkbox	Type of the field
title	string		Title of the field
default	array|string		Default value from database, if the option doesn’t exist
subtitle	string		Subtitle to display below the title
desc	string		Description to display after the field
help	string		Text to display on right-corer (as hover/popup) of the field
class	string		Extra CSS classes (space separated) to append to the field
before	string		Content to display before the field
after	string		Content to display after the field
dependency	array		Define field visibility depending on other field value.
attributes	array		Extra HTML attributes to append to the field
sanitize	string		Callback funciton for sanitizing value
validate	string		Callback function for validating value
EXTRAS
empty_message	string		Display to empty text if options empty
label	string		The text to display with the checkbox, when use to single checkbox
options	array|string		An array of object containing key/value pairs representing the options or use a predefined options ( pages posts categories tags menus users sidebars roles post_types)
query_args	array		An associative array of query arguments

query_args Arguments

Name	Type	Default	Description
post_type	string		Custom post type name. Default posts
taxonomy	string		Custom taxonomy name
posts_per_page	number		Maximum number of posts to show (Used for Custom Post Types : posts / pages
number	number		Maximum number of posts to show (used for other returns: categories / tags / menus / ex)
orderby	string	post_title	Sort retrieved posts by parameter
order	string	ASC	Designates the ascending or descending order of the orderby parameter

Get more query arguments for (posts, pages: wp_query ) and (categories, tags, menus: wp_term_query)

Basic Checkbox Field Example

array(
  'id' => 'example-checkbox',
  'type' => 'checkbox',
  'title' => 'Example Checkbox',
  'label' => 'Yes, Please Accept',
  'default' => true,  // or false
),

Checkbox Field Example with Multiple Options

array(
  'id' => 'example-checkbox',
  'type' => 'checkbox',
  'title' => 'Checkboxes',
  'options' => array(
    'option1' => 'Option One',
    'option2' => 'Option Two',
    'option3' => 'Option Three',
  ),
  'default' => array('option1','option3),
),

Checkbox Field Example with WP Query Option

array(
  'id' => 'example-checkbox',
  'type' => 'checkbox',
  'title' => 'Checkbox with Categories',
  'options' => 'categories',
  'query_args' => array(
    'orderby' => 'post_title',
    'order' => 'ASC',
  ),
),

/* Available Options
 * 'options' => 'pages',
 * 'options' => 'posts',
 * 'options' => 'categories',
 * 'options' => 'tags',
 * 'options' => 'menus',
 * 'options' => 'users',
 * 'options' => 'sidebars',
 * 'options' => 'roles',
 * 'options' => 'post_types',
*/