after_user_signup($userID) - Hook function called after a successful registration


after_user_change($userID) - Hook function called after a user changes/updates their profile.


after_user_delete($userID) - Hook function called after a user is deleted.


before_user_change ($userID) - Hook function called after a user change is verified and before it is actually executed. This allows you to get the current users email address, etc before it is changed.


$userID (INT) - The numeric OR user ID# of the user.