is_registered_sidebar() – Function | Developer.WordPress.org

Checks if a sidebar is registered.

Parameters

$sidebar_idstring|intrequired: The ID of the sidebar when it was registered.

bool True if the sidebar is registered, false otherwise.

function is_registered_sidebar( $sidebar_id ) {
	global $wp_registered_sidebars;

	return isset( $wp_registered_sidebars[ $sidebar_id ] );
}

Used by	Description
WP_Customize_Widgets::render_widget_partial()`wp-includes/class-wp-customize-widgets.php`	Renders a specific widget using the supplied sidebar arguments.
WP_Customize_Widgets::filter_dynamic_sidebar_params()`wp-includes/class-wp-customize-widgets.php`	Inject selective refresh data attributes into widget container elements.
register_sidebars()`wp-includes/widgets.php`	Creates multiple sidebars.
WP_Customize_Widgets::tally_sidebars_via_is_active_sidebar_calls()`wp-includes/class-wp-customize-widgets.php`	Tallies the sidebars rendered via is_active_sidebar() .
WP_Customize_Widgets::tally_sidebars_via_dynamic_sidebar_calls()`wp-includes/class-wp-customize-widgets.php`	Tallies the sidebars rendered via dynamic_sidebar() .
WP_Customize_Widgets::customize_register()`wp-includes/class-wp-customize-widgets.php`	Registers Customizer settings and controls for all sidebars and widgets.

Version	Description
4.4.0	Introduced.