I am using a PHP script to post a URL to a fan page that I am an admin of, but the contents of the post always appear as defined by page’s <title> tag/<meta type="description"> tag.
Can’t the contents of facebook post be changed by using facebook’s open graph description(og:description)/title(og:title) tags in the page being posted?
The title can be changed using og:title as long as the page has less than 50 likes (otherwise it is locked in by Facebook). The og:description can be changed at any time.
See: https://developers.facebook.com/docs/opengraph/