文档修改

@@ -893,9 +893,9 @@ class Update extends Api
             $UserArray = Db::name('user')->field('nickname')->order('id desc')->page(1, 50)->select();
             $NickNameArray = array_column($UserArray, 'nickname');
             if(count($NickNameArray)<30){
-                $rand_list = array_rand(array_count_values($NickNameArray), count($NickNameArray));
+                $rand_list = array_rand($NickNameArray), count($NickNameArray));
             }else{
-                $rand_list = array_rand(array_count_values($NickNameArray), 30);
+                $rand_list = array_rand($NickNameArray, 30);
             }
             foreach ($rand_list as $key) {
                 $RankArray[] = $NickNameArray[$key];