Think\Db\Connection::rollback PHP Метод

    public function rollback()
    {
        $this->initConnect(true);
        if (1 == $this->transTimes) {
            $this->linkID->rollBack();
        } elseif ($this->transTimes > 1 && $this->supportSavepoint()) {
            $this->linkID->exec($this->parseSavepointRollBack('trans' . $this->transTimes));
        }
        $this->transTimes = max(0, $this->transTimes - 1);
    }