note 78986 added to function.rand

Note, the function used by PHP to constrain a random number between (min, max) is the following: $number = $min + (($max - $min + 1) * ($number / ($rand_max + 1)); where the following: $number - the initially generated random number $min - the minimum in the range $max - the maximum in the range $rand_max - the maximum possible random value What this algorithm does is constrain the generated number to a 0-1 range, then multiply it against your range, mapping the two to each other. In practice you'll see the following results: For a generated $number of 16384 and a $rand_max of 32768: rand(0, 10) = 5 rand(0, 100) = 50 rand(0, 1000) = 500 with the additional property that if the range you're asking for is larger than $rand_max, random numbers will be in a multiple of $max/$rand_max. ---- Server IP: 87.124.64.96 Probable Submitter: 62.3.216.18 ---- Manual Page -- http://www.php.net/manual/en/function.rand.php Edit -- https://master.php.net/note/edit/78986 Del: integrated -- https://master.php.net/note/delete/78986/integrated Del: useless -- https://master.php.net/note/delete/78986/useless Del: bad code -- https://master.php.net/note/delete/78986/bad+code Del: spam -- https://master.php.net/note/delete/78986/spam Del: non-english -- https://master.php.net/note/delete/78986/non-english Del: in docs -- https://master.php.net/note/delete/78986/in+docs Del: other reasons-- https://master.php.net/note/delete/78986 Reject -- https://master.php.net/note/reject/78986 Search -- https://master.php.net/manage/user-notes.php