WordPress at a glance
function is not described

WP_Customize_Background_Image_Setting::update() public WP 3.4.0

{} It's a method of the class: WP_Customize_Background_Image_Setting{}

No Hooks.

Return

null. Nothing.

Usage

$WP_Customize_Background_Image_Setting = new WP_Customize_Background_Image_Setting();
$WP_Customize_Background_Image_Setting->update( $value );
$value (required)
-

Changelog

Since 3.4.0 Introduced.

Code of WP_Customize_Background_Image_Setting::update() WP 5.7.2

<?php
public function update( $value ) {
	remove_theme_mod( 'background_image_thumb' );
}