OCA\OcSms\Db\ConversationStateMapper::setLast PHP Method

    public function setLast($userId, $phoneNumber, $lastDate)
    {
        \OCP\DB::beginTransaction();
        $query = \OCP\DB::prepare('DELETE FROM *PREFIX*ocsms_conversation_read_states ' . 'WHERE user_id = ? AND phone_number = ?');
        $query->execute(array($userId, $phoneNumber));
        $query = \OCP\DB::prepare('INSERT INTO *PREFIX*ocsms_conversation_read_states' . '(user_id, phone_number, int_date) VALUES ' . '(?,?,?)');
        $query->execute(array($userId, $phoneNumber, $lastDate));
        \OCP\DB::commit();
    }