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Date: Tue, 23 Feb 2016 12:23:34 +0100
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Subject: Re: PRNG: Raise warning and/or provide better pseudo random
 generator?
From: cmbecker69@gmx.de (Christoph Becker)

On 23.02.2016 at 11:41, Yasuo Ohgaki wrote:

> Actual range could be determined by PHP_RAND_MAX/PHP_MT_RAND_MAX, but
> I heard Windows' PHP_RAND_MAX is only 2^15. Is this correct? 

Yes, see <https://msdn.microsoft.com/en-us/library/398ax69y.aspx>.

> Any comments for adding out of range warnings to rand()/mt_rand()? If
> nobody has comment on this, I'll write RFC for additional warnings.
> Anyone prefer to extend rand()/mt_rand() for 64bit OSes?

See also the discussion for <https://github.com/php/php-src/pull/1416>;
it might make sense to disallow such ranges in the long run (i.e. for
PHP 8), in which case we might want to raise deprecated notices instead
of warnings now.

-- 
Christoph M. Becker