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action is not described

update-custom_(action) action-hook . WP 2.8.0

Fires when a custom plugin or theme update request is received.

The dynamic portion of the hook name, $action, refers to the action provided in the request for wp-admin/update.php. Can be used to provide custom update functionality for themes and plugins.


add_action( 'update-custom_(action)', 'action_function_name_3405' );
function action_function_name_3405(){
	// action...

Where the hook is called

In file: /wp-admin/update.php
wp-admin/update.php 352
do_action( "update-custom_{$action}" ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

Where in WP core the hook is used WordPress

Usage not found.