From Storyline to PHP and back

Hello (once more)

I would like to pick up a storyline variable and send it to a php script on a server for processing. After processing, the php script will send back a response in the shape of a variable.

I would like to display the returned variable inside storyline.

I understand that I would probably need to use javascript to make this happen as storyline does not speak php.

Any help greatly appreciated - especially examples put together by others to do this.

Thank you

Andrew