WordPress at a glance
action is not described

restrict_manage_sites action-hook . WP 5.3.0

Fires before the Filter button on the MS sites list table.

Usage

add_action( 'restrict_manage_sites', 'action_function_name_5452' );
function action_function_name_5452( $which ){
	// action...
}
$which(string)
The location of the extra table nav markup: 'top' or 'bottom'.

Changelog

Since 5.3.0 Introduced.

Where the hook is called

WP_MS_Sites_List_Table::extra_tablenav()
restrict_manage_sites
wp-admin/includes/class-wp-ms-sites-list-table.php 335
do_action( 'restrict_manage_sites', $which );

Where the hook is used (in WP core)

Usage not found!