一些功能

app/api/controller/PublicController.php

@@ -60,7 +60,7 @@ class PublicController
             if (count($child)) $ress = array_merge($ress, ['children' => $child]);
             $res[] = $ress;
         }
-        var_dump($res);
+        var_dump(json_encode($res));
     }
 
     /**