Want to post using m.facebook.com on my Page

I am developing a Facebook application and i have to post on Facebook pages (by page admin) i have all the permissions like manages pages,publish stream etc.
more i also developed such kind of app before but that generally post on Facebook pages with

<?php $facebook->api('/'page_id/feed','POST',attachment ?>

but now i have to post with <m.facebook.com>

version with general PC.
any one can please help me.