CI框架中事务封装的很完善，使用起来很简单
1.不开启事务
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//不开启事务 前两个sql 能够执行成功,第三个执行失败
$this
->device_model->addForCamera(1,
'爱三123'
,
'2016122903'
, 0);
$this
->device_model->setStateInDevices(1,
array
(2));
$this
->device_model->addForCamera(1,
'爱三1234567890'
,
'2016122903'
, 0);
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2.自动事务
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//失败自动回滚
$this
->db->trans_start();
//三条sql 都执行失败
$this
->device_model->addForCamera(1,
'爱三123'
,
'2016122903'
, 0);
$this
->device_model->setStateInDevices(1,
array
(2));
$this
->device_model->addForCamera(1,
'爱三1234567890'
,
'2016122903'
, 0);
$this
->db->trans_complete();
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3.手动事务
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//若失败手动回滚 成功手动提交
$this
->db->trans_begin();
//三条sql 都执行失败
$this
->device_model->addForCamera(1,
'爱三123'
,
'2016122903'
, 0);
$this
->device_model->setStateInDevices(1,
array
(2));
$this
->device_model->addForCamera(1,
'爱三1234567890'
,
'2016122903'
, 0);
if
(
$this
->db->trans_status() === false) {
$this
->db->trans_rollback();
}
else
{
$this
->db->trans_commit();
}
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https://www.cnblogs.com/zc123/p/6233048.html