string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%87%AA%E5%B7%B1%E5%81%9A%E7%BD%91%E7%AB%99%E9%9C%80%E8%A6%81%E8%B4%AD%E4%B9%B0%E5%9F%9F%E5%90%8D%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
自己做网站需要购买域名吗
