php实现基于pdo的事务处理方法示例

<?php$dsn = 'mysql:dbname=cheyun_cms;host=127.0.0.1';$user = 'root';$password = '111111';//采用预处理+事务处理执行SQL操作//1.连接数据库try {  $pdo = new PDO($dsn, $user, $password);  $pdo->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);} catch (PDOException $e) {  die("数据库连接失败".$e->getMessage());}//2.执行数据操作try{  //开启事物,此时会关闭自动提交  $pdo->beginTransaction();  $sql = "insert into cy_log (logid, value, action, file) values (?, ?, ?, ?)";  $stmt = $pdo->prepare($sql);  //传入参数  $stmt->execute(array(null,"test4","w",11));  $stmt->execute(array(null,"test5","w",11));  $stmt->execute(array(null,"test3","w",11));  //提交事物，并且 数据库连接返回到自动提交模式  $pdo->commit();}catch(PDOException $e){  echo '执行失败'.$e->getMessage();  //如果数据库被设置成自动提交模式，rollback 在回滚事务之后将恢复自动提交模式。  //包括 MySQL 在内的一些数据库， 当在一个事务内有类似删除或创建数据表等 DLL 语句时，会自动导致一个隐式地提交。  //隐式地提交将无法回滚此事务范围内的任何更改。即 DDL 语句无法回滚  $pdo->rollback();}

<?php$dsn = 'mysql:dbname=cheyun_cms;host=127.0.0.1';$user = 'root';$password = '111111';//采用预处理+事务处理执行SQL操作//1.连接数据库try {  $pdo = new PDO($dsn, $user, $password);} catch (PDOException $e) {  die("数据库连接失败".$e->getMessage());}//2.执行数据操作//开启事物$pdo->beginTransaction();$sql = "insert into cy_log (logid, value, action, file) values (?, ?, ?, ?)";$stmt = $pdo->prepare($sql);$datalist = array(  array(null,"test9","w",11),  array(null,"test10","w",11),  array(null,"test11","w",11));//是否提交标志位$isCommit = true;foreach($datalist as $data){  $stmt->execute($data);  if($stmt->errorCode()>0){    //回滚    $pdo->rollback();    $isCommit = false;    break;  }}if($isCommit){  //提交事物  $pdo->commit();}