From: brad at njoe dot com
Operating system: Windows & *nix
PHP version: 5.2.9
PHP Bug Type: Arrays related
Bug description: ksort applied with array_walk not working consistently
Description:
------------
While using array_walk() to apply ksort() to a multidimensional array, I
experienced some unusual results. I expected that since each "sub-array"
contained identical keys and values that they would all be sorted in the
same manner. See the example code/expected output below for more
information.
I've tried this on Windows (ver. 5.2.9-2) as well as a Linux box (ver.
5.2.6) and both yielded the same results. If I manually "walk" ksort()
through the array, i.e.:
ksort($test[0]);
ksort($test[1]);
ksort($test[2]);
ksort($test[3]);
ksort($test[4]);
ksort($test[5]);
then the results are as expected. I've tried with varying number of array
elements in the parent array as well as changing the keys around; no matter
what I did, the array in $test[1] was always sorted incorrectly (and
unpredictably at that).
Reproduce code:
---------------
<?php
$test = array(
array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah'
=> 'value4', 'foo' => 'value5', 'bar' => 'value6'),
array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah'
=> 'value4', 'foo' => 'value5', 'bar' => 'value6'),
array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah'
=> 'value4', 'foo' => 'value5', 'bar' => 'value6'),
array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah'
=> 'value4', 'foo' => 'value5', 'bar' => 'value6'),
array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah'
=> 'value4', 'foo' => 'value5', 'bar' => 'value6'),
array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah'
=> 'value4', 'foo' => 'value5', 'bar' => 'value6')
);
array_walk($test, 'ksort');
print_r($test);
?>
Expected result:
----------------
Array
(
[0] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[1] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[2] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[3] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[4] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[5] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
)
Actual result:
--------------
Array
(
[0] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[1] => Array
(
[foo] => value5
[bar] => value6
[blah] => value4
[word] => value3
[this] => value2
[key] => value1
)
[2] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[3] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[4] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
[5] => Array
(
[bar] => value6
[blah] => value4
[foo] => value5
[key] => value1
[this] => value2
[word] => value3
)
)
--
Edit bug report at http://bugs.php.net/?id=48423&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=48423&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=48423&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=48423&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=48423&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=48423&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=48423&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=48423&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=48423&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=48423&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=48423&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=48423&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=48423&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=48423&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=48423&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48423&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=48423&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=48423&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=48423&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=48423&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=48423&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=48423&r=mysqlcfg
