string(239) "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%E8%BF%9B%E8%A1%8C%E6%8E%A8%E5%B9%BF%E5%AE%A3%E4%BC%A0 => Failed to connect to 101.91.112.32 port 38162: Connection refused"
如何进行推广宣传
