在PHP中使用PDO,如何检查最终的SQL参数化查询？

<?php
// 连接数据库
$dsn = "mysql:host=localhost;dbname=testdb";
$username = "username";
$password = "password";
$pdo = new PDO($dsn, $username, $password);

// 创建预处理语句
$sql = "SELECT * FROM users WHERE id = :id AND name = :name";
$stmt = $pdo->prepare($sql);

// 绑定参数
$id = 1;
$name = "John Doe";
$stmt->bindParam(":id", $id, PDO::PARAM_INT);
$stmt->bindParam(":name", $name, PDO::PARAM_STR);

// 执行预处理语句
$stmt->execute();

// 获取最终的SQL参数化查询
$queryString = $stmt->queryString;
echo "Final SQL query: " . $queryString;
?>