如何在PDO中简单地返回对象？

<?php
// 创建一个PDO对象
$dsn = "mysql:host=localhost;dbname=testdb";
$username = "username";
$password = "password";
$options = array(
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_OBJ,
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
$pdo = new PDO($dsn, $username, $password, $options);

// 查询数据
$sql = "SELECT * FROM users WHERE id = :id";
$stmt = $pdo->prepare($sql);
$stmt->bindParam(":id", $id);
$id = 1;
$stmt->execute();

// 获取查询结果
$result = $stmt->fetch();

// 输出结果
echo $result->name;
?>