php mysql判断插入成功

<?php
try {
    // 创建PDO连接
    $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password');
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    // 准备SQL语句
    $stmt = $pdo->prepare("INSERT INTO users (name, email) VALUES (:name, :email)");

    // 绑定参数
    $stmt->bindParam(':name', $name);
    $stmt->bindParam(':email', $email);

    // 设置参数值
    $name = 'John Doe';
    $email = 'john.doe@example.com';

    // 执行SQL语句
    $result = $stmt->execute();

    // 判断插入是否成功
    if ($result) {
        echo "插入成功";
    } else {
        echo "插入失败";
    }
} catch (PDOException $e) {
    echo "数据库连接失败: " . $e->getMessage();
}
?>

try {
    // 创建PDO连接
    $pdo = new PDO('mysql:host=localhost;dbname=testdb', 'username', 'password');
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    // 准备SQL语句
    $stmt = $pdo->prepare("INSERT INTO users (name, email) VALUES (:name, :email)");

    // 绑定参数
    $stmt->bindParam(':name', $name);
    $stmt->bindParam(':email', $email);

    // 设置参数值
    $name = 'John Doe';
    $email = 'john.doe@example.com';

    // 执行SQL语句
    $result = $stmt->execute();

    // 判断插入是否成功
    if ($result) {
        echo "插入成功";
    } else {
        echo "插入失败";
    }
} catch (PDOException $e) {
    echo "数据库操作失败: " . $e->getMessage();
}