Non-database server-side session data storage

[eluser]Spockz[/eluser]
I'm looking for a standard way to store the user and session data of an session on the server, without using a database.

Currently I've a website running without a database because all the information is being supplied through xml. Is there any standard way to store the data on the server side?

[eluser]gtech[/eluser]
do you want the data to be persitant?

a)you could just create a database specifically for storing session data.
b)or could just write the xml to a file. maybe have a file for each userid, have a hunt on google for 'flat files', you have to weigh up the pros and cons.

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[eluser]Spockz[/eluser]
Yes, the session data (IP etc.) should be persistant. Furthermore the user-data needs to be stored persistantly also.

The xml isn't part of the data that has to be stored in the session(s).

[eluser]gtech[/eluser]
well you can store session data in a flat file in any format you like, I thought XML might be a good choice as a dataformat as you have certain php libraries to build and extract data.