WordPress at a glance
action is not described

after_mu_upgrade action-hook . WP 3.0.0

Fires after the Multisite DB upgrade for each site is complete.


add_action( 'after_mu_upgrade', 'action_function_name_6504' );
function action_function_name_6504( $response ){
	// action...
The upgrade response array or WP_Error on failure.


Since 3.0.0 Introduced.

Where the hook is called

In file: /wp-admin/network/upgrade.php
wp-admin/network/upgrade.php 111
do_action( 'after_mu_upgrade', $response );
wp-admin/admin.php 85
do_action( 'after_mu_upgrade', $response );

Where in WP core the hook is used

Usage not found!