wp-includes/ms-functions.php:2549Updates the network-wide site count.
$network_idint|nulloptionalnullfunction wp_update_network_site_counts( $network_id = null ) { $network_id = (int) $network_id; if ( ! $network_id ) { $network_id = get_current_network_id(); } $count = get_sites( array( 'network_id' => $network_id, 'spam' => 0, 'deleted' => 0, 'archived' => 0, 'count' => true, 'update_site_meta_cache' => false, ) ); update_network_option( $network_id, 'blog_count', $count );}Introduced in 3.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ms-functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.