去重

application/admin/controller/lottery/Lottery.php

@@ -53,7 +53,7 @@ class Lottery extends Backend
             }
         }
         $code = $row->code;
-        $arr = explode('-',$code);
+        $arr = array_unique(explode('-',$code));//去重
         if(count($arr) != 5){
             $this->error('录入code有问题！');
         }