CI框架--事务

CI框架--事务

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);

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();

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(); }