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Bug #27355 rand() generates even-odd-even-odd numbers
Submitted: 2004-02-22 15:25 UTC Modified: 2004-02-22 22:27 UTC
From: chrisrogers at planetunreal dot com Assigned:
Status: Not a bug Package: Math related
PHP Version: 4.3.4 OS: Windows
Private report: No CVE-ID: None
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Bug Type:
From: chrisrogers at planetunreal dot com
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 [2004-02-22 15:25 UTC] chrisrogers at planetunreal dot com
The rand() function under Windows XP Pro and possibly other Windows OSs generates numbers in a strict even-odd-even-odd pattern.  The pattern doesn't occur on *nix OSs

Reproduce code:
for (i = 0; i < 100; i++)
    echo rand()."<br />\n";

Expected result:
expected numbers with no noticable pattern

Actual result:
numbers were in an even-odd-even-odd pattern


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 [2004-02-22 21:17 UTC] cjbj at hotmail dot com
May be related to bug 27052 which I reproduced (with the same pattern too).
 [2004-02-22 22:27 UTC]
Please do not submit the same bug more than once. An existing
bug report already describes this very problem. Even if you feel
that your issue is somewhat different, the resolution is likely
to be the same. 

Thank you for your interest in PHP.

This is already fixed in CVS..

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