dedecms执行多条sql语句

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "dedecms_db";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 开始事务
$conn->begin_transaction();

try {
    // 批量插入示例
    $sql1 = "INSERT INTO dede_archives (typeid, title, sortrank, channel) VALUES (1, '文章1', 10, 1)";
    $sql2 = "INSERT INTO dede_archives (typeid, title, sortrank, channel) VALUES (2, '文章2', 20, 2)";
    $conn->query($sql1);
    $conn->query($sql2);

    // 批量更新示例
    $sql3 = "UPDATE dede_archives SET title = '更新后的文章1' WHERE id = 1";
    $conn->query($sql3);

    // 批量删除示例
    $sql4 = "DELETE FROM dede_archives WHERE id = 2";
    $conn->query($sql4);

    // 提交事务
    $conn->commit();
    echo "事务执行成功";
} catch (Exception $e) {
    // 回滚事务
    $conn->rollback();
    echo "事务执行失败: " . $e->getMessage();
}

// 关闭连接
$conn->close();
?>