$expire)) { session_destroy(); header("Location: login.php"); exit; } // 刷新登录计时 $_SESSION['login_time'] = time(); $userName = htmlspecialchars($_SESSION['username']); $userRole = $_SESSION['role']; $roleText = $userRole === 'admin' ? '管理员' : '只读用户'; // 预加载现有配置,页面打开自动回填表单 $dbHost = "10.150.117.190"; $dbUser = "root"; $dbPwd = "hp93000"; $dbName = "alert_mail_stat"; $conn = mysqli_connect($dbHost, $dbUser, $dbPwd, $dbName); $configSql = "SELECT k,v FROM sys_config"; $configRes = mysqli_query($conn, $configSql); $sysConfig = []; while ($row = mysqli_fetch_assoc($configRes)) { $sysConfig[$row['k']] = $row['v']; } mysqli_close($conn); // 读取已有配置默认值 $pageTitle = $sysConfig['page_title'] ?? "告警监控系统"; $themeColor = $sysConfig['theme_color'] ?? "#409eff"; $pageSize = $sysConfig['page_size'] ?? "20"; $footerText = $sysConfig['footer_text'] ?? ""; $sidebarLinks = $sysConfig['sidebar_links'] ?? ""; ?>