wp-admin/includes/ajax-actions.php:1962Handles saving menu locations via AJAX.
function wp_ajax_menu_locations_save() { if ( ! current_user_can( 'edit_theme_options' ) ) { wp_die( -1 ); } check_ajax_referer( 'add-menu_item', 'menu-settings-column-nonce' ); if ( ! isset( $_POST['menu-locations'] ) ) { wp_die( 0 ); } set_theme_mod( 'nav_menu_locations', array_map( 'absint', $_POST['menu-locations'] ) ); wp_die( 1 );}Introduced in 3.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/ajax-actions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.