2020-05-01 / 5288阅 / 悠然
Deletes user interface settings.
Deleting settings would reset them to the defaults.
This function has to be used before any output has started as it calls setcookie().
(string)
(Required)
The name or array of names of the setting to be deleted.
(bool|null) True if deleted successfully, false if not. Null if the current user can't be established.