Re^4: Renaming an image file

[BrowserUk]

And what happens if the site where these images are being uploaded is, or becomes, a FaceBook or Flickr?

Or any site that has multiple upload servers; and/or uses threaded servers.

Now any scheme that tries to use upload time--even to the microsecond; and with or without combination with current pid--is almost guaranteed to create duplicates.

[mjscott2702]

Fair and valid point - but much bigger context than OP had asked for. For such situations, probably a (multi-threaded) database solution would be the robust way to go. But probably overkill for a local, one-off solution.