THAT WORKS !!!
Now I have the XML file in the /xml directory that I wanted
If anybony want to do that, just paste this part of code : http://pastebin.org/95209 just before the “?>” in workdone.php and you will have every test in a single XML file.
After that, I use LogParser to parse the Files, very powerful and based on the SQL queries : http://www.microsoft.com/downloads/details.aspx?FamilyID=890cd06b-abf8-4c25-91b2-f8d975cf8c07&displaylang=en
What a relief !