mysql事务执行完毕,需要恢复autocommit=1吗?
set autocommit =0; //关闭自动提交
start transaction; //开启一个事务;
---------------------......
commit; //正式提交事务;事务结束;
commit之后,还要把set autocommit =1恢复吗? 我看别人的案例都没恢复,commit会自动恢复?
回复讨论(解决方案)
不需要
因为一般不会在一个程序代码中进行多次事务操作
即便是,那也是在你掌控中的
连接断开,设置就自动失效了
不需要
因为一般不会在一个程序代码中进行多次事务操作
即便是,那也是在你掌控中的
连接断开,设置就自动失效了
还是不太明白:
1.PHP一个脚本,实例化一次DB类, 假设该DB对象在该脚本中执行了100条各种命令,
他每次执行一条命令后,算是自动断开了连接了吗? 还是一直使用同样的连接? 是不是应该恢复自动提交;
autocommit 默认为1,即自动提交事务
你 set autocommit =0 是为了关闭自动提交,显然这是你个人的行为
所以事务结束后,是否需要将 autocommit 还原成 1,自然也是你的个人行为
你只要重新连接数据库, autocommit 依然是 1,并不管你上次操作后的状态。这才是服务器的行为
如果你在执行完一次事务后,还要再执行 100 次事务,你是关闭还是开启事务的自动提交呢?

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Long URLs, often cluttered with keywords and tracking parameters, can deter visitors. A URL shortening script offers a solution, creating concise links ideal for social media and other platforms. These scripts are valuable for individual websites a

Laravel simplifies handling temporary session data using its intuitive flash methods. This is perfect for displaying brief messages, alerts, or notifications within your application. Data persists only for the subsequent request by default: $request-

This is the second and final part of the series on building a React application with a Laravel back-end. In the first part of the series, we created a RESTful API using Laravel for a basic product-listing application. In this tutorial, we will be dev

Laravel provides concise HTTP response simulation syntax, simplifying HTTP interaction testing. This approach significantly reduces code redundancy while making your test simulation more intuitive. The basic implementation provides a variety of response type shortcuts: use Illuminate\Support\Facades\Http; Http::fake([ 'google.com' => 'Hello World', 'github.com' => ['foo' => 'bar'], 'forge.laravel.com' =>

The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.

Do you want to provide real-time, instant solutions to your customers' most pressing problems? Live chat lets you have real-time conversations with customers and resolve their problems instantly. It allows you to provide faster service to your custom

The 2025 PHP Landscape Survey investigates current PHP development trends. It explores framework usage, deployment methods, and challenges, aiming to provide insights for developers and businesses. The survey anticipates growth in modern PHP versio

In this article, we're going to explore the notification system in the Laravel web framework. The notification system in Laravel allows you to send notifications to users over different channels. Today, we'll discuss how you can send notifications ov
