dynamic_sidebar – Hook | Developer.WordPress.org

Fires before a widget’s display callback is called.

Description

Note: The action fires on both the front end and back end, including for widgets in the Inactive Widgets sidebar on the Widgets screen.

The action is not fired for empty sidebars.

$widgetarray

An associative array of widget arguments.

name string
Name of the widget.
id string
Widget ID.
callback callable
When the hook is fired on the front end, $callback is an array containing the widget object. Fired on the back end, $callback is 'wp_widget_control', see $_callback.
params array
An associative array of multi-widget arguments.
classname string
CSS class applied to the widget container.
description string
The widget description.
_callback array
When the hook is fired on the back end, $_callback is populated with an array containing the widget object, see $callback.

do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] );

Used by	Description
wp_render_widget()`wp-includes/widgets.php`	Calls the render callback of a widget and returns the output.
dynamic_sidebar()`wp-includes/widgets.php`	Displays dynamic sidebar.

Version	Description
3.0.0	Introduced.