note 108478 added to function.rand

As Alex Khimch wrote earlier: the distribution of this function might be very biased. Therefore, do NOT use this function to generate cryptographic keys or IV's unless you know exactly what you're doing. The example script that Alex posted shows in a very neat way how predictable the output of the rand()-function is on your system. On my windows 7 system I got really neat patterns, but though that might be nice as a wallpaper of sorts, it's not what I'm using a random function for :) ---- Server IP: 83.137.20.135 Probable Submitter: 83.83.203.19 ---- Manual Page -- http://www.php.net/manual/en/function.rand.php Edit -- https://master.php.net/note/edit/108478 Del: integrated -- https://master.php.net/note/delete/108478/integrated Del: useless -- https://master.php.net/note/delete/108478/useless Del: bad code -- https://master.php.net/note/delete/108478/bad+code Del: spam -- https://master.php.net/note/delete/108478/spam Del: non-english -- https://master.php.net/note/delete/108478/non-english Del: in docs -- https://master.php.net/note/delete/108478/in+docs Del: other reasons-- https://master.php.net/note/delete/108478 Reject -- https://master.php.net/note/reject/108478 Search -- https://master.php.net/manage/user-notes.php