diff --git a/index2.0.php b/index2.0.php
new file mode 100644
index 0000000..a1141f0
--- /dev/null
+++ b/index2.0.php
@@ -0,0 +1,106 @@
+<?php
+$act = $_GET['act'] ?? '';
+if($act == "export_csv"){
+    // 先不输出JSON头，单独处理下载
+    $host = "10.150.117.190";
+    $user = "root";
+    $pass = "hp93000";
+    $dbname = "alert_mail_stat";
+    $conn = mysqli_connect($host,$user,$pass,$dbname);
+    if(!$conn){
+        header("Content-Type:text/html;charset=utf-8");
+        echo "数据库连接失败：".mysqli_connect_error();
+        exit;
+    }
+    mysqli_set_charset($conn,"utf8mb4");
+    $today = date("Y-m-d");
+    // 查询今日告警，去掉ends_at恢复时间字段
+    $sql = "SELECT alert_type,alert_name,instance,severity,starts_at,receive_time
+            FROM alert_log WHERE DATE(receive_time) = '$today' ORDER BY receive_time DESC";
+    $res = mysqli_query($conn,$sql);
+
+    // 下载头
+    ob_clean();
+    header("Content-Type: text/csv; charset=utf-8");
+    header("Content-Disposition: attachment; filename=告警报表_".$today.".csv");
+    // UTF8 BOM，Windows Excel不乱码
+    echo "\xEF\xBB\xBF";
+    // CSV表头
+    $header = ["告警状态","告警名称","实例","级别","故障开始时间","接收时间"];
+    echo implode(",",$header)."\r\n";
+    // 逐行输出数据
+    while($row = mysqli_fetch_assoc($res)){
+        $status = $row['alert_type'] == 1 ? "触发" : "恢复";
+        $line = [
+            $status,
+            $row['alert_name'],
+            $row['instance'],
+            $row['severity'],
+            $row['starts_at'],
+            $row['receive_time']
+        ];
+        // 字段逗号转义，防止内容逗号破坏CSV格式
+        foreach($line as &$v){
+            $v = '"'.str_replace('"','""',$v).'"';
+        }
+        echo implode(",",$line)."\r\n";
+    }
+    mysqli_close($conn);
+    exit;
+}
+
+// 以下普通JSON接口
+header("Content-Type:application/json;charset=utf-8");
+$host = "10.150.117.190";
+$user = "root";
+$pass = "hp93000";
+$dbname = "alert_mail_stat";
+
+$conn = mysqli_connect($host,$user,$pass,$dbname);
+if(!$conn){
+    echo json_encode(["code"=>500,"msg"=>"数据库连接失败：".mysqli_connect_error()]);
+    exit;
+}
+mysqli_set_charset($conn,"utf8mb4");
+$today = date("Y-m-d");
+
+// 当日总统计
+if($act == "day_total"){
+    $sql = "SELECT
+        SUM(IF(alert_type=1,1,0)) as fire_count,
+        SUM(IF(alert_type=2,1,0)) as resolve_count,
+        COUNT(DISTINCT instance) as instance_num
+        FROM alert_log WHERE DATE(receive_time) = '$today'";
+    $res = mysqli_fetch_assoc(mysqli_query($conn,$sql));
+    echo json_encode($res,JSON_UNESCAPED_UNICODE);
+    mysqli_close($conn);
+    exit;
+}
+
+// 告警TOP10
+if($act == "top_alert"){
+    $sql = "SELECT alert_name,COUNT(*) cnt FROM alert_log WHERE DATE(receive_time)='$today' GROUP BY alert_name ORDER BY cnt DESC LIMIT 10";
+    $data = [];
+    $q = mysqli_query($conn,$sql);
+    while($r = mysqli_fetch_assoc($q)) $data[] = $r;
+    echo json_encode($data,JSON_UNESCAPED_UNICODE);
+    mysqli_close($conn);
+    exit;
+}
+
+// 明细列表
+if($act == "log_list"){
+    $sql = "SELECT alert_type,alert_name,instance,severity,starts_at,ends_at,receive_time
+    FROM alert_log WHERE DATE(receive_time)='$today' ORDER BY receive_time DESC";
+    $data = [];
+    $q = mysqli_query($conn,$sql);
+    while($r = mysqli_fetch_assoc($q)) $data[] = $r;
+    echo json_encode($data,JSON_UNESCAPED_UNICODE);
+    mysqli_close($conn);
+    exit;
+}
+
+// 无效参数兜底
+echo json_encode(["code"=>400,"msg"=>"无效请求参数act"],JSON_UNESCAPED_UNICODE);
+mysqli_close($conn);
+?>