WordPress at a glance
function is not described

WP_Customize_Widgets::tally_rendered_widgets() public WP 3.9.0

Tracks the widgets that were rendered.

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

No Hooks.

Return

Null. Nothing.

Usage

$WP_Customize_Widgets = new WP_Customize_Widgets();
$WP_Customize_Widgets->tally_rendered_widgets( $widget );
$widget(array) (required)
Rendered widget to tally.

Changelog

Since 3.9.0 Introduced.

Code of WP_Customize_Widgets::tally_rendered_widgets() WP 5.5.2

<?php
public function tally_rendered_widgets( $widget ) {
	$this->rendered_widgets[ $widget['id'] ] = true;
}