未读数量

application/api/controller/Apmessage.php

@@ -271,6 +271,9 @@ class Apmessage extends Api
             }
         }
         $count=$count1-$count2;
+        if($count<0){
+            $count=0;
+        }
         $data['unread']=$count;
         $this->success('',$data);
     }

application/api/controller/Message.php

@@ -249,6 +249,9 @@ class Message extends Api
             }
         }
         $count=$count1-$count2;
+        if($count<0){
+            $count=0;
+        }
         $data['unread']=$count;
         $this->success('',$data);
     }