问题
How to join RSS feeds into one? (from php) what libs can help us with it?
回答1:
You'll want to use SimpleXML
Either that, or you can use something like Yahoo! Pipes to merge them for you can create a merged RSS feed for you.
http://pipes.yahoo.com/pipes/
if you use pipes, be sure to filter by date, so you can get a feed with all the posts in chronological order. I've used it for a few things and it works great!
来源：https://stackoverflow.com/questions/3266996/how-to-join-rss-feeds-into-one-from-php