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_menus_changed()

Handles menu config after theme change.

Source

File: wp-includes/nav-menu.php 

function _wp_menus_changed() {
	$old_nav_menu_locations    = get_option( 'theme_switch_menu_locations', array() );
	$new_nav_menu_locations    = get_nav_menu_locations();
	$mapped_nav_menu_locations = wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locations );

	set_theme_mod( 'nav_menu_locations', $mapped_nav_menu_locations );
	delete_option( 'theme_switch_menu_locations' );
}

Expand Source Code View on GitHub

Related

Uses

Uses
Uses Description
wp-includes/nav-menu.php: wp_map_nav_menu_locations()

Maps nav menu locations according to assignments in previously active theme.
wp-includes/nav-menu.php: get_nav_menu_locations()

Retrieves all registered navigation menu locations and the menus assigned to them.
wp-includes/theme.php: set_theme_mod()

Updates theme modification value for the active theme.
wp-includes/option.php: delete_option()

Removes option by name. Prevents removal of protected WordPress options.
wp-includes/option.php: get_option()

Retrieves an option value based on an option name.

Changelog

Changelog
Version Description
4.9.0 Introduced.