note 73587 added to function.rand

Using rand()%x is faster than rand(0,x) yes, but it is wrong. Consider the following example: RAND_MAX is 32768 (like on Windows for example) You use rand()%30000 Imagine rand() returns a value between 30000 and 32768. Modulo could make any value between 0 and 2768, but not any between 2769 and 29999 (except the value is below 29999). This would double the chance of getting a number between 0 and 2768, which is speaking against the principles of randomness. ---- Server IP: 217.160.72.57 Probable Submitter: 84.135.48.206 ---- Manual Page -- http://www.php.net/manual/en/function.rand.php Edit -- https://master.php.net/note/edit/73587 Del: integrated -- https://master.php.net/note/delete/73587/integrated Del: useless -- https://master.php.net/note/delete/73587/useless Del: bad code -- https://master.php.net/note/delete/73587/bad+code Del: spam -- https://master.php.net/note/delete/73587/spam Del: non-english -- https://master.php.net/note/delete/73587/non-english Del: in docs -- https://master.php.net/note/delete/73587/in+docs Del: other reasons-- https://master.php.net/note/delete/73587 Reject -- https://master.php.net/note/reject/73587 Search -- https://master.php.net/manage/user-notes.php