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?

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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!