function sendMessageToAll($message_id)
 {
     require_once 'ClientModel.php';
     $result = 0;
     $db = $this->conn;
     $model = new ClientModel();
     $num = array();
     $num = $model->getClientsContacts();
     $query = "INSERT INTO outgoing_messages_table(message_id,recepients) VALUES (?,?)";
     $insertstmt = $db->prepare($query);
     for ($i = 0; $i < count($num); $i++) {
         $insertstmt->bind_param("ss", $message_id, $num[$i]);
         $insertstmt->execute();
     }
     $result = $insertstmt->affected_rows;
     return $result;
 }