note 39984 added to function.rand

From: Date: Tue, 17 Feb 2004 17:27:22 +0000
Subject: note 39984 added to function.rand
Groups: php.notes 
Request: Send a blank email to php-notes+get-65311@lists.php.net to get a copy of this message
With some versions of PHP (including 4.3.4 ), there is a problem with Windows XP and rand(). In short (as this is not a bug report), if you have any POST or GET requests to the page, rand() can generate the same number each time. This bug is already listed on bugs.php.net, but a solution to the bug posted there is that you use srand() at the start of your code. example that could cause problems: <?php print rand(); ?> example of safe rand() usage: <?php srand(); print rand(); ?> >>> IF IN DOUBT, USE srand() FIRST!!! <<< ---- Manual Page -- http://www.php.net/manual/en/function.rand.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+39984 Delete -- http://master.php.net/manage/user-notes.php?action=delete+39984&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+39984&report=yes Search -- http://master.php.net/manage/user-notes.php

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