string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%AB%99%E6%8E%A8%E5%B9%BF%E5%BA%94%E8%AF%A5%E6%80%8E%E4%B9%88%E5%81%9A%E5%91%A2 => Received HTTP code 403 from proxy after CONNECT"
网站推广应该怎么做呢
