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 a general PC.
anyone can please help me.