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Re:Race Conditions == Random Number Generation by dasmithii on Friday June 27, 2014 @01:51AM (#7952869)
It seems to be an improvement from the notoriously poor rand() of PHP.

(not confident in the credibility of this article) http://boallen.com/assets/images/randbitmap_computer.png

Re:Race Conditions == Random Number Generation by ars on Friday June 27, 2014 @04:04AM (#7953122)
It's not a PHP function, it's a C library function that PHP is using.

On Linux rand() doesn't suffer from the problem.