php - Known problems with filemtime() on Windows - files getting touched arbitrarily? -

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is there known issue leading file modification times of cache files on windows xp sp 3 getting arbitrarily updated, without actual change?

is there service on standard windows xp - backup, sync, versioning, virus scanner - known touch files? have .txt extension.

if there isn't, forget it. i'm getting wrong in cache routines, , i'll debug way through.

background:

i'm building simple caching wrapper around slow web site on windows server.

i comparing filemtime() time stamp columns in data base determine whether cached file stale.

i'm having problems using method because modification time of cache files seems updated in between operations without me doing anything. results in stale files being displayed.

i'm user on machine. operating system windows xp, webserver xampp apache 2 php 5.2

you setup logging* on machine find out changing files. description take happens frequently, might find processmonitor (german) better solution monitoring.

* think can setup logging on-board tools well, not sure anymore how


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