$expire)) { session_destroy(); header("Location: login.php"); exit; } $_SESSION['login_time'] = time(); $userName = htmlspecialchars($_SESSION['username']); $userRole = $_SESSION['role']; $roleText = $userRole === 'admin' ? '管理员' : '只读用户'; // 数据库读取现有配置,页面打开自动回填 $dbHost = "10.150.117.190"; $dbUser = "root"; $dbPwd = "hp93000"; $dbName = "alert_mail_stat"; $conn = mysqli_connect($dbHost, $dbUser, $dbPwd, $dbName); mysqli_set_charset($conn, "utf8mb4"); $res = mysqli_query($conn, "SELECT k,v FROM sys_config"); $config = []; while ($row = mysqli_fetch_assoc($res)) { $config[$row['k']] = $row['v']; } mysqli_close($conn); // 赋值表单默认值 $pageTitle = $config['page_title'] ?? "告警监控系统"; $themeColor = $config['theme_color'] ?? "#409eff"; $pageSize = $config['page_size'] ?? "20"; $footerText = $config['footer_text'] ?? ""; $sidebarLinks = $config['sidebar_links'] ?? ""; ?>