note 25344 added to function.rand

On 16-Jul-2002 at 05:27, noisehnois@sigilodoemail.org.net wrote: ----- $firsts = rand(0,999); $seconds = rand(0,999); $thirds = rand(0,999); $fourths = rand(0,999); $total = $firsts.$seconds.$thirds.$fourths; echo $total; ----- ...which is ALMOST perfect. But not quite. Simple concatenation will cause "clumps" in the distribution of the "random" numbers. Examples: Given: $firsts = 123; $seconds = 45; $thirds = 6; $fourths = 789; Then: $total = 123456789 Given: $firsts = 12; $seconds = 345; $thirds = 67; $fourths = 89; Then: $total = 123456789 But fear not! sprintf to the rescue! Given: $firsts = 123; $seconds = 45; $thirds = 6; $fourths = 789; Then $total = sprintf("%03d%03d%03d%03d", $firsts, $seconds, $thirds, $fourths) = 123045006789; Given: $firsts = 12; $seconds = 345; $thirds = 67; $fourths = 89; Then $total = sprintf("%03d%03d%03d%03d", $firsts, $seconds, $thirds, $fourths) = 012345067089; hApPY raNDomiZING! -- http://www.php.net/manual/en/function.rand.php http://master.php.net/manage/user-notes.php?action=edit+25344 http://master.php.net/manage/user-notes.php?action=delete+25344 http://master.php.net/manage/user-notes.php?action=reject+25344