Extension:New User Email Notification/hooks/NewUserNotifSubject

Details

 * $callobj: The object (Class::NewUserNotifier) from which the call was made ($this).
 * $MessageBody: The string returned from this function that is the body message of the email to be delivered
 * $SiteName: The name of the site from which this email is being delivered
 * $recipient: The user name of the email recipient
 * $user: The object (Class::User) of the user for which this message is being generated

Example
A full example can be found in the example extension ExtendedParamsExample.php included in Extension:NewUserNotif distribution.