truly unique random number generate by php?

Posted by proyb2 on Stack Overflow See other posts from Stack Overflow or by proyb2
Published on 2010-05-14T11:42:07Z Indexed on 2010/05/14 11:44 UTC
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php

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php4

I'm have build an up php script to host large number of images upload by user, what is the best way to generate random numbers to image filenames so that in future there would be no filename conflict? Be it like Imageshack. Thanks.

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