string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BB%BA%E7%AB%8B%E4%B8%80%E4%B8%AA%E7%BD%91%E7%AB%99%E9%9C%80%E8%A6%81%E4%BB%80%E4%B9%88%E6%8A%80%E6%9C%AF%E5%91%A2 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
建立一个网站需要什么技术呢
