This is old but surprisingly works (checked in 2020). I do not recommend using this but maybe it'll help.

This fork began long ago, at a time when the API was more difficult to use. The API is much simpler now. This code was modified to work with the new API, but it's incomplete. However, it works and is a decent start.

This is a fork of the original Fantasy Football Nerd API. It follows their license.

• Their site: http://www.fantasyfootballnerd.com/
• The official API: http://www.fantasyfootballnerd.com/fantasy-football-api

• Get an API key
• Add this key to sdk.php, as the API_KEY constant
• Execute sdk.php

After modifying (adding) your API key, you could use PHP's internal web server to test via sdk.php like so:

$ php -S localhost:8888 sdk.php

Then, open your browser to localhost:8888