is_registered_sidebar() WP 1.0

Checks if a sidebar is registered.

✈ 1 time = 0.000013s = very fast | 50000 times = 0.02s = speed of light

No Hooks.

true/false. True if the sidebar is registered, false otherwise.

is_registered_sidebar( $sidebar_id );

$sidebar_id(string/int) (required): The ID of the sidebar when it was registered.

Since 4.4.0

Introduced.

<?php
function is_registered_sidebar( $sidebar_id ) {
	global $wp_registered_sidebars;

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