Re: Logic sought

Write a script that cron runs that checks dates of files and removes 1 month old ones? On Wed, Jul 9, 2008 at 4:45 PM, tedd <tedd@sperling.com> wrote: > Hi gang: > > Here's the logic problem. > > First the site: > > http://php1.net/b/zip-files/ > > Now, the site works well enough. The user selects what they want, clicks > Submit, the order is assembled in zip file and presented to the user for > downloading. > > However, as it stands now, before the script assembles the test.zip, it > deletes (unlinks) the previous test.zip and therein lies the problem. > > If two, or more, users hit the site at the same time then a RACE condition > may have one user getting something they didn't ask for or not getting > anything at all. > > The complicated way I figure I could solve this would be to: > > 1. Generate a random string name for the file -- instead of test.zip, it > could be ax12nhg34.zip. > > 2. Then when the user selects the download that would trigger a javascript > routine that would send the name of the file to be deleted to a slave php > script that would unlinks the file. > > I know this will work, but if the user never downloads the file, then the > files accumulate on the server. > > Does anyone have a better idea? > > Thanks, > > tedd > > -- > ------- > http://sperling.com > http://ancientstones.com > http://earthstones.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >