note 115724 added to function.mt-rand

With PHP 5.3.3, we're seeing odd behavior on 32 bit Linux. This works fine on 64 bit Linux: <?php printf ("%08x\n", mt_rand (0, 0xFFFFFFFF)); ?> but on our 32 bit Linux development server, it's always yielding "00000000". On that same machine, this: <?php printf ("%08x\n", mt_rand (0, 0xFFFFFFF0)); ?> seems to always yield either 00000000 or a number in the range fffffff2 to ffffffff. This: <?php printf ("%08x\n", mt_rand (0, 0xFFFFFF00)); ?> gives numbers where the last two digits vary, and so on through at least 0xF0000000. However, this: <?php printf ("%08x\n", mt_rand (0, 0x7FFFFFFF)); ?> seems to be well-behaved. The moral? On 32 bit systems, be careful about crossing the signed number boundary, 0x7FFFFFFF. ---- Server IP: 72.52.91.14 Probable Submitter: 162.202.114.49 ---- Manual Page -- http://php.net/manual/en/function.mt-rand.php Edit -- https://master.php.net/note/edit/115724 Del: integrated -- https://master.php.net/note/delete/115724/integrated Del: useless -- https://master.php.net/note/delete/115724/useless Del: bad code -- https://master.php.net/note/delete/115724/bad+code Del: spam -- https://master.php.net/note/delete/115724/spam Del: non-english -- https://master.php.net/note/delete/115724/non-english Del: in docs -- https://master.php.net/note/delete/115724/in+docs Del: other reasons-- https://master.php.net/note/delete/115724 Reject -- https://master.php.net/note/reject/115724 Search -- https://master.php.net/manage/user-notes.php