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php事务处理实例详解,php事务处理详解
PHP一般是怎做SQL事务处理的
php练级步骤
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php事务处理实例详解,php事务处理详解

Jun 13, 2016 am 09:29 AM
php transaction processing

php事务处理实例详解,php事务处理详解

一、php事务处理概述:

事务:是若干事件的集合
事务处理:当所有事件执行成功,事务才执行;若有任何一个事件不能成功执行,事务的其它事件也不被执行。

只要你的MySQL版本支持BDB或InnoDB表类型,那么你的MySQL就具有事务处理的能力。这里面,又以InnoDB表类型用的最多,虽然后来发生了诸如Oracle收购InnoDB等令MySQL不爽的事情,但是这类商业事件与技术无关,下面就以InnoDB表类型为例简单说一下MySQL中的事务处理。

二、php事务处理代码:

<&#63;php
 try{
 $pdo=new PDO("mysql:host=localhost;dbname=psp","root","");
 $pdo->exec("set names utf8");
 $pdo->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);//设置异常处理模式
 $pdo->setAttribute(PDO::ATTR_AUTOCOMMIT,0);//关闭自动提交
 }catch(PDOException $e){
 echo "数据库连接失败";
 exit;
 }

 try{
 $age=10;
 $pdo->beginTransaction();//开始事务
 $affected_rows1=$pdo->exec("update kfry set k_age=k_age+{$age} where k_name='user1'");
 $affected_rows2=$pdo->exec("update kfry set k_age=k_age-{$age} where k_name='user2'");//随意更改使之执行成功或失败
 /* if($affected_rows1&&$affected_rows2)
 {
  $pdo->commit();
  echo "操作成功";
 }else{
  $pdo->rollback();
 } */
 if(!$affected_rows1)
  throw new PDOException("加入错误");
 if(!$affected_rows2)
  throw new PDOException("减少错误");
 echo "操作成功";
 $pdo->commit();//如果执行到此处前面两个更新sql语句执行成功,整个事务执行成功
 }catch(PDOException $e){
 echo "操作失败:".$e->getMessage();
 $pdo->rollback();//执行事务中的语句出了问题,整个事务全部撤销
 }
 $pdo->setAttribute(PDO::ATTR_AUTOCOMMIT,1);
 //测试是否成功
 echo "\n操作结果为:\n";
 $sql="select * from kfry";
 $result=$pdo->query($sql);
 foreach($result as $v)
 {
 echo $v['k_name']." ".$v['k_age']."\n";
 }
&#63;>
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PHP一般是怎做SQL事务处理的

EC中有事务处理,PHP怎么实现这个还真没研究过,回家研究研究再告诉你
 

php练级步骤

第一阶段第一讲,WEB基础 1.1 网站基本知识;1.2 网络协议介绍; 1.3 B/S与C/S结构的区别;1.4 WEB编程、网站开发技术介绍。 第二讲,网页设计 2.1 Dreamweaver介绍及使用;2.2 静态网页HTML语言; 2.3 标题与段落,换行与分割线;2.4 表格、表单;2.5 框架、超链接、图片。 实例:1,使用表格进行网页布局设计; 2,使用表单、表格、框架进行系统后台界面设计。第三讲,DIV+CSS 3.1 CSS的概念及基本语法;3.2 用CSS设置丰富的文字效果设置图片效果; 3.3 用CSS设置表格与表单的样式,用CSS设置页面和浏览器的元素;3.4 CSS盒模型;3.7 CSS+DIV布局,CSS+DIV美化与布局实战。 实例:1,使用DIV+CSS设计按钮及Tab; 2,使用DIV+CSS设计导航菜单;3,使用DIV+CSS设计论坛网页;4,使用DIV+CSS设计博客网页。第四讲,PHP开发环境 4.1 集成开发环境XAMPP安装;4.2 Zend Studio的安装、配置; 4.3 Eclipse PDT的安装与配置;4.4 编写第一个PHP程序;4.5 调试PHP程序。 第五讲,PHP编程基础 5.1 PHP语言特性与发展趋势;5.2 PHP变量常量数据类型; 5.3 PHP运算符与表达式;5.4 PHP流程控制语句;5.5 PHP函数。 第六讲,MySQL开发基础 6.1 MySQL数据库系统介绍及安装;6.2 MySQL数据类型介绍; 6.3 MySQL表的创建、修改与删除;6.4 MySQL查询语句;6.5 PHP MySQL函数使用详解。 实例:1,论坛数据库表设计; 2,PHP连接MySQL数据库,实现增删改查。第七讲,Web2.0开发技术Ajax 7.1 JavaScript介绍;7.2 JavaScript语法基础; 7.3 DOM对象基础及事件;7.4 Ajax核心对象XMLHttpRequest详解;7.5 Ajax异步通信原理;7.6 开发Ajax应用;7.6 Ajax框架jQuery介绍及使用。 实例:1,Tab的动态切换效果; 2,论坛系统中使用Ajax方式验证用户名是否被注册;3,论坛系统中通过Ajax方式获取用户信息。第八讲,PHP Web2.0网站实例开发 8.1 Web2.0风格的论坛系统开发;8.2 Web2.0风格的博客系统实战开发。 实例:1,综合DIV+CSS +PHP+MySQL+Ajax技术开发论坛; 2,综合DIV+CSS +PHP+MySQL+Ajax技术开发博客系统。 第二阶段第一讲,PHP面向对象基础 1.1 面向对象编程介绍;1.2 面向过程与面向对象的区别; 1.3 面向对象的基本特性;1.4 类、属性和方法;1.5 构造函数;1.6 类的实例化;1.7 使用类的属性和方法;1.8 类的访问控制;1.9 类的继承与多态;1.10 面向对象的接口及抽象类;1.11 类、对象及对象之间的关系;1.12 几个常见的运算符和关键字。 实例:1,购物车对象关系设计; 2,班级、学生、课程、考试对象关系设计。第二讲,PHP模板技术Smarty框架 2.1 Smarty模板技术介绍;2.2 Smarty安装与配置; 2.3 Smarty 变量与变量修饰符;2.4 Smarty分支结构;2.5 Smarty循环......余下全文>>
 

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