WordPress at a glance

register_widget() WP 1.0

Register a widget Registers a WP_Widget widget

Registers a WP_Widget widget

No Hooks.


null. Nothing.


register_widget( $widget );
$widget(string|WP_Widget) (required)
Either the name of a WP_Widget subclass or an instance of a WP_Widget subclass.


  • See: WP_Widget
  • Global. WP_Widget_Factory. $wp_widget_factory


Since 2.8.0 Introduced.
Since 4.6.0 Updated the $widget parameter to also accept a WP_Widget instance object instead of simply a WP_Widget subclass name.

Code of register_widget() WP 5.7.2

function register_widget( $widget ) {
	global $wp_widget_factory;

	$wp_widget_factory->register( $widget );

From tag: Sidebar (widgets)

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