How to join RSS feeds into one? (from php)

开发者_高级运维How to join RSS feeds into one? (from php) what libs can help us with it?

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!