Persistent data across page calls

Hi I have a site that uses a large number of data arrays that are nearly static (change once a week or less) they are used on almost every page in the site Currently I have them as a separate file that is included at the top of each script page. I would like a way to cache? them at the server level so that only one copy stays in memory between calls to different pages and the file doesn't get reloaded with each page call The site is running on: FreeBSD 4.9 Apache 1.3.28 PHP 4.3.4 I would prefer to be able to do this in php but I am open to an apache solution if necessary. Thanks Aaron Aaron -at- nsinetworking.com