Rss to twitter and facebook using php

i create the rss feed ( for news ) in my website using php using administration page…
all that i need is to synchronize RSS feed with facebook and twitter… so when updating news in my administration page it will update the RSS feed, and in the same time it will update the same news in twitter and facebook…

can anyone help me in doing this task

I use Ping.FM to automate updates from my site to several social networking sites, including twitter, facebook and facebook pages.

After signing up, you can use the Feeds by SuperFeedr link to add an RSS feed.

Hope that helps.