WordPress at Your Fingertips
action is not described

wpmu_upgrade_site action-hook . WP 3.0.0

Fires after each site has been upgraded.


add_action( 'wpmu_upgrade_site', 'action_function_name_1653' );
function action_function_name_1653( $site_id ){
	// action...
The Site ID.

Where the hook is called

In file: /wp-admin/network/upgrade.php
wp-admin/network/upgrade.php 121
do_action( 'wpmu_upgrade_site', $site_id );

Where in WP core the hook is used WordPress

Usage not found.