~~~ <?php $dbhost = 'localhost:3306'; // mysql服务器主机地址 $dbuser = 'root'; // mysql用户名 $dbpass = '123456'; // mysql用户名密码 $conn = mysqli\_connect($dbhost, $dbuser, $dbpass); 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 runoob\_transaction\_test (id) values(8)")) { mysqli\_query($conn, "ROLLBACK"); // 判断当执行失败时回滚 } if(!mysqli\_query($conn, "insert into runoob\_transaction\_test (id) values(9)")) { mysqli\_query($conn, "ROLLBACK"); // 判断执行失败时回滚 } mysqli\_commit($conn); //执行事务 mysqli\_close($conn); ?> ~~~