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Bug #53553 Same value items reverted in asort() and arsort()
Submitted: 2010-12-16 11:10 UTC Modified: 2010-12-16 14:17 UTC
From: clau dot cristea at gmail dot com Assigned:
Status: Not a bug Package: Arrays related
PHP Version: 5.3.4 OS: Debian
Private report: No CVE-ID: None
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 [2010-12-16 11:10 UTC] clau dot cristea at gmail dot com 
Description:
------------
After sorting an associative array with asort() or arsort() items having same value are reverted.

Those sorting must preserve order on same value case.

---
From manual page: http://www.php.net/function.arsort
---


Test script:
---------------
<?php

$a = array('first' => 2, 'second' => 2);
$b = $a; // Save original.

print "Original:\n";
print_r($a);

asort($a);

print "\n\nasort():\n";
print_r($a);

arsort($b);

print "\n\narsort():\n";
print_r($b);
print "\n";

?>


Expected result:
----------------
I'm expecting that asort() and arsort() to preserve the order of items having the same value.

Actual result:
--------------
See below asort(); and arsort(); that keys were reverted.

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AllCommentsChangesGit/SVN commitsRelated reports
 [2010-12-16 11:52 UTC] cataphract@php.net
-Status: Open +Status: Feedback
 [2010-12-16 11:52 UTC] cataphract@php.net 
Where is it stated in the docs the sort is stable?
 [2010-12-16 13:26 UTC] clau dot cristea at gmail dot com
-Status: Feedback +Status: Open
 [2010-12-16 13:26 UTC] clau dot cristea at gmail dot com 
> Where is it stated in the docs the sort is stable?

Don't know... Where is stated that is not?
 [2010-12-16 14:17 UTC] cataphract@php.net
-Status: Open +Status: Bogus
 [2010-12-16 14:17 UTC] cataphract@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions.  Due to the volume
of reports we can not explain in detail here why your report is not
a bug.  The support channels will be able to provide an explanation
for you.

Thank you for your interest in PHP.

Then I don't know where you got the idea the sorting of asort() and arsort() was stable.

Closing as bogus. See also bug #53341.
 
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