3 namespace MediaWiki\User\Registration
;
5 use MediaWiki\User\UserIdentity
;
11 interface IUserRegistrationProvider
{
14 * Get user registration timestamp
16 * @param UserIdentity $user
17 * @return string|false|null Registration timestamp, null if not available or false if it
18 * cannot be fetched (anonymous users, for example).
20 public function fetchRegistration( UserIdentity
$user );