Question

is_nav_menu( int|string $menu )

Check if the given ID is a navigation menu.

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description

Returns true if it is; false otherwise.

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参数

$menu

(int|string) (Required) The menu to check (ID, slug, or name).

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返回值

(bool) Whether the menu exists.

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源代码

File: wp-includes/nav-menu.php

function is_nav_menu( $menu ) {
	if ( ! $menu )
		return false;

	$menu_obj = wp_get_nav_menu_object( $menu );

	if (
		$menu_obj &&
		! is_wp_error( $menu_obj ) &&
		! empty( $menu_obj->taxonomy ) &&
		'nav_menu' == $menu_obj->taxonomy
	)
		return true;

	return false;
}

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更新日志

Version	description
3.0.0	Introduced.

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相关函数

Uses

• wp-includes/nav-menu.php: wp_get_nav_menu_object()
• wp-includes/load.php: is_wp_error()

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Used By

• wp-admin/includes/nav-menu.php: wp_save_nav_menu_items()
• wp-admin/includes/nav-menu.php: wp_get_nav_menu_to_edit()

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User Contributed Notes