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wp_nav_menu_disabled_check( int|string $nav_menu_selected_id, bool $echo = true )

Check whether to disable the Menu Locations meta box submit button and inputs.

Parameters

$nav_menu_selected_id

(int|string) (Required) ID, name, or slug of the currently selected menu.

$echo

(bool) (Optional) Whether to echo or just return the string.

Default value: true

Return

(string|false) Disabled attribute if at least one menu exists, false if not.

Source

File: wp-admin/includes/nav-menu.php 

function wp_nav_menu_disabled_check( $nav_menu_selected_id, $echo = true ) {
	global $one_theme_location_no_menus;

	if ( $one_theme_location_no_menus ) {
		return false;
	}

	return disabled( $nav_menu_selected_id, 0, $echo );
}

Uses

Uses Description
wp-includes/general-template.php: disabled()

Outputs the HTML disabled attribute.

Changelog

Version Description
5.3.1 The $echo parameter was added.
3.6.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/wp_nav_menu_disabled_check