neiyou_user_web/app/Http/Middleware/Affiliate.php

<?php

namespace App\Http\Middleware;

use Closure;
use Cookie;
use Illuminate\Http\Request;

class Affiliate
{
	/**
	 * 返利识别
	 *
	 * @param Request $request
	 * @param Closure                  $next
	 *
	 * @return mixed
	 */
	public function handle($request, Closure $next)
	{
		$aff = trim($request->input('aff', 0));
		if($aff){
			Cookie::queue('register_aff', $aff, 129600);
		}

		return $next($request);
	}
}