PDO事务控制

<?php
  header(‘content-type:text/html;charset=utf-8‘);
  $dsn=‘mysql:host=localhost;dbname=test‘;
  $pdo=new PDO($dsn,‘root‘,‘‘);
  $pdo->exec(‘set names utf8‘);

  $pdo->beginTransaction(); //开启事务

  $sql1="UPDATE users SET money=money+100 WHERE id=100";
  $res1=$pdo->exec($sql1);
  $sql2="UPDATE users SET money=money+100 WHERE id=2";
  $res2=$pdo->exec($sql2);

  if ($res1>0 && $res2>0) {
    $pdo->commit(); //事务提交
    echo ‘操作成功‘;
  }else {
    $pdo->rollback(); //事务回滚
    echo ‘操作失败‘;
  }
  $pdo->setATTribute(PDO::ATTR_AUTOCOMMIT,1); //事务结束后，还原设置为自动提交单独语句
  $pdo=null;  //关闭连接
 ?>