商城盈利页面报错修复

@@ -718,6 +718,8 @@ class PersonalcenterController extends WeChatBaseController{
 
             //显示学校年级
             $school = Db::name('school') -> where('uid',$uid) -> select() -> toArray();
+            $schools = [];
+            $grade_class_show = [];
             if(count($school) != 0){
                 $grade_class = Db::name('grade_class') -> where("school_id",$school[0]['id']) -> select();
                 foreach ($grade_class as $key => $val){
@@ -730,9 +732,6 @@ class PersonalcenterController extends WeChatBaseController{
                     $schools[$key]['value'] = $val['id'];
                     $schools[$key]['text'] = $val['school'];
                 }
-            }else{
-                $schools = '';
-                $grade_class_show = '';
             }
             $this -> assign('school',json_encode($schools));
             $this -> assign('grade_class_show',$grade_class_show);