MySqli事务控制

<?php
  header(‘content-type:text/html;charset=utf-8‘);
  $mysqli=new mysqli(‘localhost‘,‘root‘,‘‘,‘test‘);
  $mysqli->query(‘set names utf8‘); 

  $mysqli->autocommit(false); //开启事务 存储引擎:InnoDB
  $sql1="UPDATE users SET money=money-10 where id=1"; 
  $sql2="UPDATE users SET money=money+10 where id=100";
  $mysqli->query($sql1);
  $res1=$mysqli->affected_rows;
  $mysqli->query($sql2);
  $res2=$mysqli->affected_rows;
  if ($res1>0 && $res2>0) {
    $mysqli->commit(); //事务提交
    echo ‘操作成功‘;
  }else {
    $mysqli->rollback(); //事务回滚
    echo ‘操作失败‘;
  }
  
 ?>