优化：Give_Gift 表查询处理

application/adminapi/controller/Statistical.php

@@ -131,10 +131,9 @@ class Statistical extends adminApi
             strtotime($end_time)
         );
         if(empty($tables)){
-            $tables = "fa_vs_give_gift";
+            $tables[0] = "fa_vs_give_gift";
         }
         $table_name = substr($tables[0], 3);//截取可查询的表名
-
         $count = db::name($table_name)
             ->where($where)
             ->group($group)