<?php


namespace common\fm;

use Yii;
use yii\helpers\StringHelper;
use yii\helpers\ArrayHelper;

class Request extends StringHelper
{

    public static function Referer($modules = '')
    {
        $refArr = parse_url(Yii::$app->request->getReferrer());//上一页的URL
        $hostInfo = parse_url(Yii::$app->request->hostInfo);   //当前URL
        if (!empty($refArr['host']) && $refArr['host'] == $hostInfo['host']) {
            return 'javascript:history.back(-1)';
        }

        if ($modules != '') {
            return '/' . $modules;
        }
        return '/';
//
    }
}