php中mysqli事务处理

<?php
$mysqli = new mysqli("localhost", "username", "password", "database");

if ($mysqli->connect_error) {
    die("连接失败: " . $mysqli->connect_error);
}

// 开始事务
$mysqli->begin_transaction();

try {
    // 执行SQL语句
    $sql1 = "UPDATE accounts SET balance = balance - 100 WHERE id = 1";
    $sql2 = "UPDATE accounts SET balance = balance + 100 WHERE id = 2";

    if ($mysqli->query($sql1) === TRUE && $mysqli->query($sql2) === TRUE) {
        // 提交事务
        $mysqli->commit();
        echo "事务提交成功";
    } else {
        // 回滚事务
        $mysqli->rollback();
        echo "事务回滚";
    }
} catch (Exception $e) {
    // 发生异常时回滚事务
    $mysqli->rollback();
    echo "发生异常: " . $e->getMessage();
}

$mysqli->close();
?>