Laravel條件搜尋一般使用where方法，如下：

查詢構造器：

$users = DB::table('users')->where('votes', '=', 100)->get();

$users = User::where('votes', '=', 100)->all();

$articles = Article::where('id','>','10')->where('is_auth','=','1')->where('id','=','14')->paginate(3)

public function index(Request $request)
    {
        //分類表資料
        $sorts = Sortart::all();
        //文章表例項化
        $article = new Article;
        //搜尋條件判斷
        $where = $article;
        if($request->search_sid){
            $where = $where->where('sort_id','=',$request->search_sid);
        }
        if($request->search_title){
            $where = $where->where('title','like','%'.$request->search_title.'%');
        }
        //分頁搜尋
        $articles = $where->paginate(3);
        //搜尋條件保持
        $articles->sid = $request->search_sid;
        $articles->title = $request->search_title;
        //$articles = Article::where('id','>','10')->where('is_auth','=','1')->where('id','=','14')->paginate(3);
        //dd($articles);
        return view('admin.articles.index',compact('articles','sorts'));
    }
 

{!! $articles->appends(['search_sid'=>$articles->sid, 'search_title'=>$articles->title])->render() !!}