laravel分页

    //当前页数 默认1
    $page = $request->page ?: 1;
    //每页的条数
    $perPage = 10;
    //计算每页分页的初始位置
    $offset = ($page * $perPage) - $perPage;
    //实例化LengthAwarePaginator类，并传入对应的参数
    $data = new LengthAwarePaginator(array_slice($rank, $offset, $perPage, false), count($rank), $perPage,$page, ['path' => $request->url(), 'query' => $request->query()]);