#27355 [NEW]: rand() generates even-odd-even-odd numbers

From: chrisrogers at planetunreal dot com Operating system: Windows PHP version: 4.3.4 PHP Bug Type: Math related Bug description: rand() generates even-odd-even-odd numbers Description: ------------ 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: --------------- <?php 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 -- Edit bug report at http://bugs.php.net/?id=27355&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=27355&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=27355&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=27355&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=27355&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=27355&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=27355&r=needscript Try newer version: http://bugs.php.net/fix.php?id=27355&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=27355&r=support Expected behavior: http://bugs.php.net/fix.php?id=27355&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=27355&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=27355&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=27355&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=27355&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=27355&r=dst IIS Stability: http://bugs.php.net/fix.php?id=27355&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=27355&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=27355&r=float