string(230) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%B4%AD%E4%B9%B0%E5%9F%9F%E5%90%8D%E8%A6%81%E6%B3%A8%E6%84%8F%E4%BB%80%E4%B9%88 => Received HTTP code 403 from proxy after CONNECT"
购买域名要注意什么
