PHP开发：如何实现用户登录日志功能

CREATE TABLE `login_logs` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `login_time` datetime NOT NULL,
  `ip_address` varchar(255) NOT NULL,
  `user_agent` varchar(255) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

// 获取用户IP地址
$ipAddress = $_SERVER["REMOTE_ADDR"];

// 获取用户浏览器信息
$userAgent = $_SERVER["HTTP_USER_AGENT"];

// 记录登录日志
$currentTime = date("Y-m-d H:i:s");
$userId = 123; // 获取当前登录用户的ID（这里只是示例，可以根据你的实际情况来获取）
$sql = "INSERT INTO login_logs (user_id, login_time, ip_address, user_agent) VALUES (?, ?, ?, ?)";
$stmt = $pdo->prepare($sql);
$stmt->execute([$userId, $currentTime, $ipAddress, $userAgent]);

// 查询登录日志
$userId = 123; // 获取需要查询的用户ID
$sql = "SELECT * FROM login_logs WHERE user_id = ?";
$stmt = $pdo->prepare($sql);
$stmt->execute([$userId]);
$loginLogs = $stmt->fetchAll(PDO::FETCH_ASSOC);

// 显示登录日志
foreach ($loginLogs as $loginLog) {
    echo "登录时间：".$loginLog["login_time"]."<br>";
    echo "登录IP地址：".$loginLog["ip_address"]."<br>";
    echo "登录浏览器信息：".$loginLog["user_agent"]."<br>";
    echo "<br>";
}