Bug #71090 [Opn]: Comparison operators loop
| From: | laruence@php.net | Date: | Fri, 11 Dec 2015 13:37:02 +0000 |
| Subject: | Bug #71090 [Opn]: Comparison operators loop | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-197790@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=71090&edit=1
ID: 71090
Updated by: laruence@php.net
Reported by: reallfqq-php at yahoo dot fr
Summary: Comparison operators loop
Status: Open
Type: Bug
Package: Scripting Engine problem
PHP Version: 7.0.0
Block user comment: N
Private report: N
New Comment:
the problem is INF, comparing sequence matters here.
Previous Comments:
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[2015-12-11 12:19:10] reallfqq-php at yahoo dot fr
Description:
------------
PHP's comparison operators are circular, generatng situations where impossible equalities are
considered valid.
This bug is posted in reference to:
http://phpsadness.com/sad/52
Test script:
---------------
<?php
function is_sorted($array) {
$n = count($array);
for ($a=0; $a<$n-1; $a++) {
for ($b=$a+1; $b<$n; $b++) {
if ($array[$a] > $array[$b]) {
return false;
}
}
}
return true;
}
$array = array(INF, array(), (object)array());
sort($array);
var_dump(is_sorted($array))
?>
Expected result:
----------------
bool(true)
Actual result:
--------------
bool(false)
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=71090&edit=1