string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%81%9A%E4%B8%80%E4%B8%AA%E7%BD%91%E7%AB%99%E9%9C%80%E8%A6%81%E5%85%B7%E5%A4%87%E5%93%AA%E4%BA%9B%E6%8A%80%E6%9C%AF => Failed to connect to 101.89.117.144 port 38076: Connection refused"
做一个网站需要具备哪些技术
