#49698 [Opn]: Unexpected change in strnatcasecmp()

From: Date: Mon, 28 Sep 2009 11:22:53 +0000
Subject: #49698 [Opn]: Unexpected change in strnatcasecmp()
References: 1  Groups: php.bugs 
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 ID:               49698
 Updated by:       sjoerd@php.net
 Reported By:      sander dot vink at procurios dot nl
 Status:           Open
 Bug Type:         Strings related
 Operating System: Linux
 PHP Version:      5.2.11
 New Comment:

This seems to be solved already in PHP 5.3-HEAD.


Previous Comments:
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[2009-09-28 07:56:04] sander dot vink at procurios dot nl

Description:
------------
We use the strnatcasecmp()-function to get a "natural order" in our 
lists of items. Up until PHP 5.2.9 it worked like a charm, but since we

upgraded to PHP 5.2.11 the order seems to have been changed.

The natural order is used in our case to support the sorting of items 
that have been prefixed with numbers (0, 1, 2, etc). This is exactly 
where the problem arises: 0 should be "sorted" before 1, but this is no

longer the case.

This problem also occurs in the latest snapshot of PHP 5.3

Reproduce code:
---------------
<?php

$string1 = '0 Foo';
$string2 = '1 Bar';

var_dump(strnatcasecmp($string1, $string2));

Expected result:
----------------
int(-1)

Actual result:
--------------
int(1)


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