broken link ! : http://rukavina.co.cc/freshbooks/php/docs/ would someone provide me with some docs for this API. Thanks

If you download the latest API, there's a docs folder inside the zip file that explains all the classes, also includes an example call which should get you going while the link's down.

Note on $->listing method calls.

In the sample code is shows the search array as being:

array('client_id'=>$clientId)

It should instead be

array('clientId'=>$clientId)

Cheers