Convert overture script to use KeywordToolExternal ?

[Jekiko]

Hello
Ages ago I bought a php script that used
inventory.overture.com website to get information
on keywords. Now that has been scrapped does
anyone know if I can use the script on the
KeywordToolExternal url ?

This is the function that did the work with overture:

file("http://inventory.overture.com/d/searchinventory/suggestion/?mkt=us&lang=en_US&term=".urlencode($_POST["keywords"]));

The Extension tool url is:

https://adwords.google.com/select/KeywordToolExternal

but I can not see how I can use it with a script.

Anyone done anything like this ?

Thanks