phpmysql关联删除

<?php
// 数据库连接配置
$host = 'localhost';
$username = 'your_username';
$password = 'your_password';
$dbname = 'your_database';

// 创建数据库连接
$conn = new mysqli($host, $username, $password, $dbname);

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

// 关联删除 SQL 语句
$sql = "DELETE users, orders FROM users INNER JOIN orders ON users.user_id = orders.user_id WHERE users.user_id = ?";

// 准备 SQL 语句
$stmt = $conn->prepare($sql);

// 绑定参数
$user_id = 1; // 需要删除的用户 ID
$stmt->bind_param('i', $user_id);

// 执行 SQL 语句
if ($stmt->execute()) {
    echo "关联删除成功";
} else {
    echo "关联删除失败: " . $stmt->error;
}

// 关闭连接
$stmt->close();
$conn->close();
?>