Filters whether a site name is taken.
$resultint|null$domainstring$pathstring$network_idintwp-includes/ms-functions.php:1635domain_exists() * * @param int|null $result The site ID if the site name exists, null otherwise. * @param string $domain Domain to be checked. * @param string $path Path to be checked. * @param int $network_id Network ID. Only relevant on multi-network installations. */ return apply_filters( 'domain_exists', $result, $domain, $path, $network_id );} /** * Notifies the site administrator that their site activation was successful. * * Filter {@see 'wpmu_welcome_notification'} to disable or bypass.Introduced in 3.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.