laravel 手动分页 我分的是数组

namespace App\Http\Controllers\Admin;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use DB;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Collection;

class AdnamesController extends Controller
{
    public function index()
    {

        $info = DB::table('表名')->get(['字段'])->map(function ($value){
            return (array)$value;
        })->toArray();
        $vs = [];
        foreach($info as $v){
            $vs[] = $v['mac'];
        }
        $arr_info = array_count_values(array_filter($vs));
        arsort($arr_info);
        //获取当前的分页数 初始是1;
        $currentPage = LengthAwarePaginator::resolveCurrentPage();
        //实例化collect方法
        $collection = new Collection($arr_info);
        //定义一下每页显示多少个数据
        $perPage =10;
        //获取当前需要显示的数据列表
        $currentPageSearchResults = $collection->slice(($currentPage-1) * $perPage, $perPage)->all();
        //创建一个新的分页方法
        $paginatedSearchResults_a= new LengthAwarePaginator($currentPageSearchResults, count($collection), $perPage);
        //储存路径防止下一页路径丢失
        $arr_info = $paginatedSearchResults_a->setPath('/tool_ad');
        return view('Admin.AdTool.index',['arr_info'=>$arr_info]);
    }
}