domain_exists
domain_exists ( $domain, $path, $network_id = 1 )
Parameters:- (string) domain The domain to be checked.
- (string) path The path to be checked.
- (int) network_id Optional. Network ID. Only relevant on multi-network installations. Default 1.
Returns:- (int|null) The site ID if the site name exists, null otherwise.
Defined at:Change Log: - Introduced in WordPress: —
- Deprecated in WordPress: —
Description
Checks whether a site name is already taken.The name is the site's subdomain or the site's subdirectory
path depending on the network settings.
Used during the new site registration process to ensure
that each site name is unique.