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is_registered_sidebar( string|int $sidebar_id )

Checks if a sidebar is registered.

Parameters

$sidebar_id

(string|int) (Required) The ID of the sidebar when it was registered.

Return

(bool) True if the sidebar is registered, false otherwise.

Source

File: wp-includes/widgets.php 

function is_registered_sidebar( $sidebar_id ) {
	global $wp_registered_sidebars;

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

Used By

Used By Description
wp-includes/class-wp-customize-widgets.php: WP_Customize_Widgets::render_widget_partial()

Renders a specific widget using the supplied sidebar arguments.
wp-includes/class-wp-customize-widgets.php: WP_Customize_Widgets::filter_dynamic_sidebar_params()

Inject selective refresh data attributes into widget container elements.
wp-includes/widgets.php: register_sidebars()

Creates multiple sidebars.
wp-includes/class-wp-customize-widgets.php: WP_Customize_Widgets::tally_sidebars_via_is_active_sidebar_calls()

Tallies the sidebars rendered via is_active_sidebar().
wp-includes/class-wp-customize-widgets.php: WP_Customize_Widgets::tally_sidebars_via_dynamic_sidebar_calls()

Tallies the sidebars rendered via dynamic_sidebar().
wp-includes/class-wp-customize-widgets.php: WP_Customize_Widgets::customize_register()

Registers Customizer settings and controls for all sidebars and widgets.

Changelog

Version Description
4.4.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/is_registered_sidebar