$getMensa = $crud->select("SELECT * FROM vpp_chat WHERE id_of = :id_of AND id_to = :id_to OR id_of = :id_of AND id_to = :id_to", array(
':id_of' => $id_of,
':id_to' => $id,
':id_of' => $id,
 ':id_to' => $id_of
));