舉例說明：
$articles = DB::table('articles')->join('category','articles.cateid','=','category.id')
->where('cateid',$_POST['articlecolumn'])
->orWhere('parentid',$_POST['articlecolumn']) //重點，與上一句where構成或者(OR)關系！
->where('title','like','%'.$_POST['searchname'].'%')
->whereBetween('articles.updated_at', [$_POST['logmin'], $_POST['logmax']])
->select('articles.*','category.name')
->get()->toArray();