wp_list_widget_controls_dynamic_sidebar( array $params )

function wp_list_widget_controls_dynamic_sidebar( $params ) {
	global $wp_registered_widgets;
	static $i = 0;
	$i++;

	$widget_id = $params[0]['widget_id'];
	$id = isset($params[0]['_temp_id']) ? $params[0]['_temp_id'] : $widget_id;
	$hidden = isset($params[0]['_hide']) ? ' style="display:none;"' : '';

	$params[0]['before_widget'] = "<div id='widget-{$i}_{$id}' class='widget'$hidden>";
	$params[0]['after_widget'] = "</div>";
	$params[0]['before_title'] = "%BEG_OF_TITLE%"; // deprecated
	$params[0]['after_title'] = "%END_OF_TITLE%"; // deprecated
	if ( is_callable( $wp_registered_widgets[$widget_id]['callback'] ) ) {
		$wp_registered_widgets[$widget_id]['_callback'] = $wp_registered_widgets[$widget_id]['callback'];
		$wp_registered_widgets[$widget_id]['callback'] = 'wp_widget_control';
	}

	return $params;
}