+
+ /**
+ * Saves a list of integer notice_ids into a packed blob in this object.
+ * @param array $ids list of integer notice_ids
+ */
+ protected function pack(array $ids)
+ {
+ $this->notice_ids = call_user_func_array('pack', array_merge(array('N*'), $ids));
+ }
+
+ /**
+ * @return array of integer notice_ids
+ */
+ protected function unpack()
+ {
+ return unpack('N*', $this->notice_ids);
+ }