laravel分页 | 笔记

$page = $request->get('page')?$request->get('page'):1; //页数
$show = $request->get('show')?$request->get('show'):15; // 每页显示
$res  = DB::table(self::$table)
            ->where("", '', )
            ->offset(($page-1)*$show)->limit($show)->get();