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action is not described

wpmu_upgrade_page action-hook . WP 3.0.0

Fires before the footer on the network upgrade screen.

Usage

add_action( 'wpmu_upgrade_page', 'action_function_name_5451' );
function action_function_name_5451(){
	// action...
}

Changelog

Since 3.0.0 Introduced.

Where the hook is called

In file: /wp-admin/network/upgrade.php
wpmu_upgrade_page
wp-admin/network/upgrade.php 149
do_action( 'wpmu_upgrade_page' );

Where the hook is used (in WP core)

Usage not found!