WordPress at a glance
action is not described

wpmu_upgrade_page action-hook . WP MU

Fires before the footer on the network upgrade screen.

Usage

add_action( 'wpmu_upgrade_page', 'action_function_name_6976' );
function action_function_name_6976(){
	// action...
}

Notes

  • Since MU (3.0.0)

Where the hook is called

In file: /wp-admin/network/upgrade.php
wpmu_upgrade_page
wp-admin/network/upgrade.php 138
do_action( 'wpmu_upgrade_page' );

Where the hook is used (in WP core)

Does not used.