Fires at the top of the WP updates tab, per Site view.

Parameters

$websites
(object) Object containing the child sites data.
$total_wp_upgrades
(int) Number of available WP upates.
$all_groups_sites
(array) Array containing all groups and sites.
$all_groups
(array) Array containing all groups.
$site_offset_for_groups
(array) Offset value.

Usage Example

add_action( 'mainwp_updates_persite_before_wp_updates', 'your_custom_function_name' );

function your_custom_function_name( $websites, $total_wp_upgrades, $all_groups_sites, $all_groups, $site_offset_for_groups ) {
// Your code
}