I have not found something in Wordpress to give me an URL from a file path. site_url does not work as I need relative path to feed to it so ... I created my own. If it exists .... point it out to me :)

Zone unavailable to unregistered users.
Registration is quick, painless and worth its weight in gold.

You can use it like this: echo el_wp_fileURL(__FILE__); or like this: echo el_wp_fileURL(dirname(__FILE__).'/images/image.png');