The method GetRubricList returns subscriptions to which the message
will be sent.
The issue ID.
Returns an instance of the CDBResult
class. The ID, NAME, SORT, LID and ACTIVE fields of the Issue
object become available after calling one of the CDBResult methods.
//obtain subscriptions to which the message is to be sent
$aPostRub = array();
$post_rub = CPosting::GetRubricList($post_arr["ID"]);
while($post_rub_arr = $post_rub->Fetch())
$aPostRub = $post_rub_arr["ID"];