调优

@@ -25,7 +25,7 @@ class AutoMail {
         $old = redis()->get('prev_auto_mail_keyword',[]);
 
         $filter = isAiAutoMail(true,true);
-
+        if(!$filter) return 0;
         redis()->set('prev_auto_mail_keyword',$filter,86400);
 
         $t = function ($vs){

@@ -466,11 +466,15 @@ function isAiAutoMail($from,$subject,$body=''){
         if($filter && !$re){
             return $filter;
         }
+        $redisfilter = $filter;
 
         $filter = @file_get_contents('https://fob.ai.cc/api/mail/ai_inbox_filter/'.md5('aicc.'.date('ymdh')));
         $filter = @json_decode($filter,true);
         if(!is_array($filter)){
-            return 0;
+            if($redisfilter){
+                return $redisfilter;
+            }
+            return [];
         }
         $filters = [];
         array_map(function ($v) use (&$filters){