WordPress at a glance
function is not described

WP_Widget::_get_update_callback() public WP 2.8.0

Retrieves the widget update callback.

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

No Hooks.

Return

callable. Update callback.

Usage

$WP_Widget = new WP_Widget();
$WP_Widget->_get_update_callback();

Changelog

Since 2.8.0 Introduced.

Code of WP_Widget::_get_update_callback() WP 5.7.2

<?php
public function _get_update_callback() {
	return array( $this, 'update_callback' );
}