string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E5%81%9A%E6%90%9C%E7%B4%A2%E6%8E%92%E5%90%8D%E7%9A%84%E8%A1%A8%E6%A0%BC => Failed to connect to 61.171.74.35 port 38041: Connection refused"
如何做搜索排名的表格
