From: praxodas at gmail dot com
Operating system: linux
PHP version: 5.2.9
PHP Bug Type: Scripting Engine problem
Bug description: Passing variables byRef to foreach and doing array_reverse
yelds unexp. results
Description:
------------
After reversing an array and passing it by reference in foreach and then
doing array_reverse on itself, passing the same array by value in another
foreach overwrites previous array elements with the last one.
If a copy of an array is made, the copy is overwritten as well.
A workaround would be to pass the array by reference in the next foreach
loop.
Reproduce code:
---------------
<?php
$demo_array=array(array('val1'=>'apple',
'ord_num'=>2),array('val2'=>'orange', 'ord_num'=>3));
$demo_array=array_reverse($demo_array);
foreach ($demo_array as $key=>&$el)
{
$el['ord_num']=$key;
}
$demo_array=array_reverse($demo_array);
$new_array=$demo_array;
foreach ($demo_array as $k=>$el)
{
// do nothing,..
}
echo "\r\nnew_array:\r\n";
print_r($new_array);
echo "\r\ndemo_array:\r\n";
print_r($demo_array);
?>
Expected result:
----------------
new_array:
Array
(
[0] => Array
(
[val1] => apple
[ord_num] => 1
)
[1] => Array
(
[val2] => orange
[ord_num] => 0
)
)
demo_array:
Array
(
[0] => Array
(
[val1] => apple
[ord_num] => 1
)
[1] => Array
(
[val2] => orange
[ord_num] => 0
)
)
Actual result:
--------------
new_array:
Array
(
[0] => Array
(
[val2] => orange
[ord_num] => 0
)
[1] => Array
(
[val2] => orange
[ord_num] => 0
)
)
demo_array:
Array
(
[0] => Array
(
[val2] => orange
[ord_num] => 0
)
[1] => Array
(
[val2] => orange
[ord_num] => 0
)
)
--
Edit bug report at http://bugs.php.net/?id=48404&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=48404&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=48404&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=48404&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=48404&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=48404&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=48404&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=48404&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=48404&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=48404&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=48404&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=48404&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=48404&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=48404&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=48404&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48404&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=48404&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=48404&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=48404&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=48404&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=48404&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=48404&r=mysqlcfg
