cpi与ppi之间的关系网!
string(209) "get document error:https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cpi%E4%B8%8Eppi%E4%B9%8B%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB => Received HTTP code 403 from proxy after CONNECT"
cpi与ppi之间的关系网!