好友数量

        //好友数量
        $user_id = $user->id;
        $sql = "select count(*) as total from `user_friend`  where  `status` = ? and(
                         ( `user_id` = {$user_id} )  
                        or ( `friend_user_id` = {$user_id} ))";
        $my_friend = DB::select($sql,[1]);