string(258) "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%E6%9C%89%E4%BB%80%E4%B9%88%E4%BD%9C%E7%94%A8%E5%90%97 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
购买域名有什么作用吗
