Description:
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The other day I wrote a PHP implementation of a spec which mandates using a cryptographically-secure random number generator.  For most Unix systems this is easy (/dev/urandom or /dev/random), but getting access to such a source in PHP for Windows seems impossible.  

I thought it might be beneficial for PHP to expose the best source of randomness availble via fopen("php://random") or some such.  I confess I don't know how difficult this would be to do, but it would certainly be more feasible for PHP itself to pull this off in a cross-platform fashion than for little old me writing software from within PHP.

Reproduce code:
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From manual page: wrappers.php
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