ID: 36975
Comment by: crescentfreshpot at yahoo dot com
Reported By: ateixeira at gmail dot com
Status: Open
Bug Type: Arrays related
Operating System: *
PHP Version: 5.1.2
New Comment:
sort re-indexes it's input. natcasesort/asort/arsort etc do not.
Previous Comments:
------------------------------------------------------------------------
[2006-04-13 16:45:54] ateixeira at gmail dot com
At first I thought array_pop was the problem as well. However, I only
experienced this error when using 'natcasesort'. If I changed to using
'sort' instead, the error went away. In both natcasesort and sort, the
array's indices should be out of order due to the sorting, but
natcasesort is the only one to give me an error. It's strange, though,
since when I run your test, I also get an error, proving your array_pop
issue. So, that probably points to it being related to array_pop and
not natcasesort, but that still doesn't explain why 'sort' will work,
but not 'natcasesort'.
------------------------------------------------------------------------
[2006-04-13 14:50:19] crescentfreshpot at yahoo dot com
This seems like an array_pop() bug to me.
This behaviour happens when array indices are 'out of order' and you
then use array_pop(). Any subsequent 'pushing' onto the end of the
array fails.
Using either the empty-square-bracket syntax or array_push() will both
fail. Square-bracket syntax issues the warning, array_push() does not.
Re: pushing new values onto the end of an array, the docs state: "the
maximum of the existing integer indices is taken, and the new key will
be that maximum value + 1"
It seems the engine cannot generate the next index after array_pop()
does it's thing.
Smaller reproduce code:
<?php
error_reporting(E_ALL);
$list = array(1 => 'foo', 0 => 'baz');
array_pop($list);
$list[] = 'bar'; // <- fails, issues warning
array_push($list, 'bar'); // <- fails, no warning
print_r($list);
?>
Expected Result
---------------
Array
(
[1] => foo
[2] => bar
[3] => bar
)
Actual Result
-------------
Warning: Cannot add element to the array as the next element is already
occupied in C:\Dev\webserver_root\t.php on line 5
Array
(
[1] => foo
)
------------------------------------------------------------------------
[2006-04-04 21:06:37] ateixeira at gmail dot com
Description:
------------
After using natcasesort, using the array_pop and array_push (or arr[] =
$value construct) in conjunction cause the following error (on
array_push):
Warning: Cannot add element to the array as the next element is
already occupied in xxxxx.php on Line xx
Also, the value doesn't get pushed onto the array.
Reproduce code:
---------------
$fileList = array('aa', 'aa', 'bb', 'bb', 'cc', 'cc');
$test = natcasesort($fileList);
if ($test) {
echo "natcasesort success!\n";
}
$val = array_pop($fileList);
$fileList[] = $val;
print_r($fileList);
Expected result:
----------------
natcasesort success!
Array
(
[0] => aa
[1] => aa
[2] => bb
[3] => bb
[4] => cc
[5] => cc
)
Actual result:
--------------
natcasesort success!
PHP Warning: Cannot add element to the array as the next element is
already occupied in /webroot/root/projects/RPMfe/j.php on line 10
Warning: Cannot add element to the array as the next element is already
occupied in /webroot/root/projects/RPMfe/j.php on line 10
Array
(
[0] => aa
[1] => aa
[3] => bb
[2] => bb
[5] => cc
)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=36975&edit=1
