[imp] help in empty the trash folder

[Liu Jinhui]

   In imp-3.1 there is a new menu entry which can empty the 
trash folder. But when I used this function, I got the error:
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Warning: Bad arguments to implode() in /var/www/horde/imp/lib/Message.php on line 148

Fatal error: Call to a member function on a non-object in /var/www/horde/imp/mailbox.php on line 370

Warning: IMAP protocol error: Invalid sequence in Uid (errflg=2) in Unknown on line 0

Warning: Invalid sequence in Uid (errflg=2) in Unknown on line 0
 
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I looked into the mailbox.php :

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case EMPTY_MAILBOX:
     $check = @imap_check($imp['stream']);
     if (is_object($check) && !empty($check->Nmsgs)) {
         if (!IMP_Message::delete('1:*')) {
                                 ~~~~~~~~~~~
             $notification->push(sprintf(_("There was a problem expunging the mailbox. This is what the server said: %s"), imap_last_error()), 'horde.error');
         }
     }
     if ($url = Horde::getFormData('return_url')) {
         header('Location: ' . $url);
         exit;
     }
     break;
}    
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where is the problem?
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡Liu Jinhui
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡=A1hui@student.dlut.edu.cn
¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡2002-10-26