I really don't know where to post this one, so apologies if it's in the wrong place. This is what I'd like to do:

User writes using stylus (or mouse, or finger) onto screen.
When they're finished, they click "Done".
The XML data from the inking (InkML) is saved to mysql using php.

Once I can do this I can think about getting it out of mysql and displaying it again, but this is the first hurdle.

Is it possible? Does anyone know how? I guess I'm really asking how to save any sort of XML data which is generated on the fly (rather than uploading a static XML file) into mysql.