Nginx强制域名跳转到主域名代码

 if ($host != 'gfw.upward-club.com') {

        rewrite ^/(.*)$ https://gfw.upward-club.com/?url=$host$1 permanent;
    }

public function index(Request $request)
    {
        $param = $request->param();
        $url = $request->param('url');
        //如果没有传递URL链接
        if(!$url){
            $data = [
              'old_url' => 'https://gfw.upward-club.com/' ,
                'new_url'=> 'https://gfw.upward-club.com/',
            ];
            View::assign('data',$data);
        }
        $result = Db::name('idcmaster_gfwfree')->where('old_url',$url)->find();
        if ($result){
            View::assign('data',$result);
        }else{
            $data = [
                'old_url' => 'https://gfw.upward-club.com/' ,
                'new_url'=> 'https://gfw.upward-club.com/',
            ];
            View::assign('data',$data);
        }
        return view();
    }