_wp_customize_include ( No parameters )
- Introduced in WordPress: 3.4.0
- Deprecated in WordPress: —
Includes and instantiates the WP_Customize_Manager class.Loads the Customizer at plugins_loaded when accessing the customize.php admin
page or when any request includes a wp_customize=on param or a customize_changeset
param (a UUID). This param is a signal for whether to bootstrap the Customizer when
WordPress is loading, especially in the Customizer preview
or when making Customizer Ajax requests for widgets or menus.