call of external php skript to export guild event list

[Egladil]

I don't know if something like this has allready been developed, id so it would be nice if I could get a hint where to look for it.
What I want to do is, to have an additional button in the Guild window event list (either for each event or under all events), with which I can copy the content and send it via a post command to a php script on my webserver that will than put these entries in a database to be shown on our guild website. It would not be big issue, if the internal browser would have to be used to reach this goal, but better way would be a direct call of the php file on the remote server if possible somehow. I allready worked with the guild window little bit, and I found out allread how to put an additional button under the whole list, but I don´t know how to call now the exteral php skript via the onpress method. The Data theat should be inluded in the transfer to the php script is the date, the type of event and the event itself.
If I have to go through the browserwindow I would like to know how the data from the guildevents can be saved into a variable tht I can pass to the html form to be send to the server. Another possibility would be just adding the data behin the call of the script as otpions, but this would limit the tranfer to one event what ould lead to a lot of browercalls if there has not been an update of the serverdatabse for some days.

I hope tht I could mke clear what my purpose is and what kind of solutions I was allready think about. Unfortunatly I am quit a noob on XML so that ther might be an easy solution that I could just not find by now.

For ny help, comment or solution I would be very pleased.