There is no way to keep data "in memory" without also having a process attached to it.

You will either have to stick the data into a file or into some kind of database.

If you want to be notified of file changes, keep a process running and look at the inotify modules.

In reply to Re: keeping something in memory after the end of script by Corion
in thread keeping something in memory after the end of script by swissknife

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