string(279) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%AF%B7%E9%97%AEraw%E6%A0%BC%E5%BC%8Fps%E5%90%8E%E7%94%A8%E4%BB%80%E4%B9%88%E6%A0%BC%E5%BC%8F%E4%BF%9D%E5%AD%98 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
请问raw格式ps后用什么格式保存
