Simple webgame highscore system with XML

I am new to web game development and I am trying to do a web canvas game for a competition.
I have finished most of the codes but I am having problems with the highscore system which is a requirement for the game.
I have access to the server where I can host my game but it does not support SQL.
I am thinking of using only XML and ajax to manage the highscore.
Is this possible? Is that any reference that I can look into?
So far I haven't find a way to modify XML files with ajax directly.
I am aware that php is able to modify XML files, but I am also not sure whether the server will be able to support that.
Do all php servers support handling of XML files the same way?
(I know there is a difference between php 4 and php 5)
Any detailed tutorial on how to modify XML files in JavaScript will be appreciated.
Thanks.Also, the organizer has provided this document which is supposed to help with the highscore system:1 Create a text or XML file to store top 10 scoresTo be able to store your game high-scores online you will need an Web-server and an online database. Hence, create a empty text file that will act like a database. Determine what will be the delimiter to identify/separate each score. (Delimiter can be a
 
Back
Top