string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=p%E5%9B%BE%E7%9A%84%E8%BD%AF%E4%BB%B6%E6%9C%89%E4%BB%80%E4%B9%88%E5%8A%9F%E8%83%BD => Failed to connect to 101.89.143.195 port 38109: Connection refused"
p图的软件有什么功能
