note 99112 deleted from language.operators.arithmetic by hholzgra
| From: | hholzgra@php.net | Date: | Thu, 02 Aug 2012 15:07:43 +0000 |
| Subject: | note 99112 deleted from language.operators.arithmetic by hholzgra | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-189823@lists.php.net to get a copy of this message | ||
Note Submitter: crazycat at c-p-f dot org
----
I notice a trouble with the modulus operator, when trying to work with great values:
<?php
function modulo($val, $div) {
$r = $val - (floor($val/$div)*$div);
return $r;
}
$values = array(375389654, 50856937683);
$divs = array(2, 16, 62);
foreach ($values as $v) {
foreach ($divs as $d) {
echo $v, '%', $d, ' gives ', modulo($v, $d), ' but get ',
($v%$d), '<br />';
}
}
?>
And output :
<?php
/*
375389654%2 gives 0 but get 0
375389654%16 gives 6 but get 6
375389654%62 gives 52 but get 52
50856937683%2 gives 1 but get -1
50856937683%16 gives 3 but get -13
50856937683%62 gives 27 but get -21
*/
?>