is_active_sidebar( string|int $index )

Whether a sidebar is in use.

Description Description

Parameters Parameters


(string|int) (Required) Sidebar name, id or number to check.

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Return Return

(bool) true if the sidebar is in use, false otherwise.

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Source Source

File: wp-includes/widgets.php

function is_active_sidebar( $index ) {
	$index = ( is_int($index) ) ? "sidebar-$index" : sanitize_title($index);
	$sidebars_widgets = wp_get_sidebars_widgets();
	$is_active_sidebar = ! empty( $sidebars_widgets[$index] );

	 * Filters whether a dynamic sidebar is considered "active".
	 * @since 3.9.0
	 * @param bool       $is_active_sidebar Whether or not the sidebar should be considered "active".
	 *                                      In other words, whether the sidebar contains any widgets.
	 * @param int|string $index             Index, name, or ID of the dynamic sidebar.
	return apply_filters( 'is_active_sidebar', $is_active_sidebar, $index );

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Changelog Changelog

Version Description
2.8.0 Introduced.

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User Contributed Notes User Contributed Notes

  1. Skip to note content
    Contributed by Isaac Lubow

    Note that you cannot search by sidebar name if the ID was not specifically declared when register_sidebar was called, and even then only when the ID is exactly the value of sanitize_title($sidebar_name).

    The simple method used by the code (see above) is the reason for this:

    $index = ( is_int($index) ) ? "sidebar-$index" : sanitize_title($index);

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