This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_wp_reset_invalid_menu_item_parent( array $menu_item_data )

Prevents menu items from being their own parent.

Description

Resets menu_item_parent to 0 when the parent is set to the item itself.
For use before saving _menu_item_menu_item_parent in nav-menus.php.

Parameters

$menu_item_data: (Required) The menu item data array.

Return

(array) The menu item data with reset menu_item_parent.

Source

File: wp-includes/nav-menu.php

function _wp_reset_invalid_menu_item_parent( $menu_item_data ) {
	if ( ! is_array( $menu_item_data ) ) {
		return $menu_item_data;
	}

	if (
		! empty( $menu_item_data['ID'] ) &&
		! empty( $menu_item_data['menu_item_parent'] ) &&
		(int) $menu_item_data['ID'] === (int) $menu_item_data['menu_item_parent']
	) {
		$menu_item_data['menu_item_parent'] = 0;
	}

	return $menu_item_data;
}

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Changelog

Changelog
Version	Description
6.2.0	Introduced.