note 63846 added to function.mt-rand
| From: | me at osu1 dot php dot net | Date: | Sat, 01 Apr 2006 20:42:33 +0000 |
| Subject: | note 63846 added to function.mt-rand | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-107137@lists.php.net to get a copy of this message | ||
I've written a script to test mt_rand().
<?
$min=0;
$max=5;
$count=10000;
for($i=0;$i<$count;$i++){
$numbers[mt_rand($min,$max)]++;
}
ksort($numbers);
$av=$count/($max-$min+1);
foreach($numbers as $number=>$value){
$div=($value/$av-1)*100;
echo "$number Difference from average: $div%<br>";
}
echo "<pre>";
print_r($numbers);
echo "</pre>";
?>
The Output:
0 Difference from average: 6.68%
1 Difference from average: -0.64%
2 Difference from average: 2.6%
3 Difference from average: -3.58%
4 Difference from average: -3.16%
5 Difference from average: -1.9%
Array
(
[0] => 1778
[1] => 1656
[2] => 1710
[3] => 1607
[4] => 1614
[5] => 1635
)
----
Server IP: 194.153.94.11
Probable Submitter: 84.72.21.191
----
X-Spam-Status: No, hits=3.3 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER,
HTML_MESSAGE autolearn=no version=2.64
----
Manual Page -- http://www.php.net/manual/en/function.mt-rand.php
Edit -- http://master.php.net/note/edit/63846
Del: integrated -- http://master.php.net/note/delete/63846/integrated
Del: useless -- http://master.php.net/note/delete/63846/useless
Del: bad code -- http://master.php.net/note/delete/63846/bad+code
Del: spam -- http://master.php.net/note/delete/63846/spam
Del: non-english -- http://master.php.net/note/delete/63846/non-english
Del: in docs -- http://master.php.net/note/delete/63846/in+docs
Del: other reasons-- http://master.php.net/note/delete/63846
Reject -- http://master.php.net/note/reject/63846
Search -- http://master.php.net/manage/user-notes.php