我如何使用php来应用MySQL交易功能？

$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database";

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

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

$conn->autocommit(FALSE);

$conn->begin_transaction();

$sql = "INSERT INTO your_table (column1, column2, column3) VALUES ('value1', 'value2', 'value3')";

if ($conn->query($sql) === TRUE) {
    echo "记录插入成功";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->commit();
echo "交易提交成功";

$conn->rollback();
echo "交易回滚";

$conn->close();