php 事务

<?php
$dbhost = 'localhost:3306';  // mysql服务器主机地址
$dbname = 'test';
$dbuser = 'root';            // mysql用户名
$dbpass = 'root';          // mysql用户名密码
$conn = mysqli_connect($dbhost, $dbuser, $dbpass,$dbname);
if(! $conn )
{
    die('连接失败: ' . mysqli_error($conn));
}
// 设置编码，防止中文乱码
mysqli_query($conn, "set names utf8");
mysqli_select_db( $conn, 'RUNOOB' );
mysqli_query($conn, "SET AUTOCOMMIT=0"); // 设置为不自动提交，因为MYSQL默认立即执行
mysqli_begin_transaction($conn);            // 开始事务定义
 
if(!mysqli_query($conn, "insert into callback (name) values(8)") || !mysqli_query($conn, "insert into callback (id) values(9)"))
{    
    mysqli_query($conn, "ROLLBACK");     // 判断当执行失败时回滚
}
 
/*if()
{    
    mysqli_query($conn, "ROLLBACK");      // 判断执行失败时回滚
}*/
mysqli_commit($conn);            //执行事务
mysqli_close($conn);
?>

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