RSS - SimplePie - keeping older cache articles

[ucgbpr82]

I have a simple SimplePie script working here fine to retrieve RSS feeds.http://www.oil-gas-prices.com/the problem is , SimplePie only caches what is there at the feed at that moment. Any newer cache will overwrite the older articles. I don't want them to overwrite the old ones. I'd like to specify at which point the pagination will cut off. From the simplepie research i've done, it seems this is how simplepie was created. To not care about saving older cache's within it's pagination. but I hope i'm wrong ? Here it specifies - http://simplepie.org/wiki/faq/how_does_simplepie_s_caching_http_conditional_get_system_work\[quote\] \[quote\] If the cache has changed, SimplePie dumps the existing cache (since the cache is just a copy of the data object based on the feed), and grabs a new copy of the feed and uses it. \[/quote\]\[/quote\]Is there any type of PHP coding that can be added to keep more of the older cache within the system and within pagination ? If not, can someone recommend what I need. Please.... I've been looking for the right RSS program for a month now...Finally SimplePie seemed like everything I needed...EXCEPT the one issue i'm having above.