From: tomas_matousek at hotmail dot com
Operating system: WinXP
PHP version: 5.0.0RC2
PHP Bug Type: Scripting Engine problem
Bug description: Operator = changes structure of self-referencing arrays
Description:
------------
Create an array $b and set some of its item to reference the array itself
by =& operator. Then assign this array to some other variable. This
assignment (*) makes something wrong in the array $b because if you change
$b's items after this assignment the structure of array $b is changed.
However, if that assignment (*) doesn't take place the behavior is
correct.
Reproduce code:
---------------
$b = array(1,2,3,4);
$b[4] =& $b;
// this assignment probably makes changes to $b's structure
$c = $b;
$b[1] = 'X';
$b[4][1] = 'Y';
$b[4][4][1] = 'Z';
print_r($b);
Expected result:
----------------
Array
(
[0] => 1
[1] => Z
[2] => 3
[3] => 4
[4] => Array
*RECURSION*
)
Actual result:
--------------
Array
(
[0] => 1
[1] => X
[2] => 3
[3] => 4
[4] => Array
(
[0] => 1
[1] => Y
[2] => 3
[3] => 4
[4] => Array
(
[0] => 1
[1] => Z
[2] => 3
[3] => 4
[4] => Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => Array
*RECURSION*
)
)
)
)
--
Edit bug report at http://bugs.php.net/?id=28734&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28734&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28734&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=28734&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=28734&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=28734&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=28734&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=28734&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=28734&r=support
Expected behavior: http://bugs.php.net/fix.php?id=28734&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=28734&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=28734&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=28734&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28734&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=28734&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=28734&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=28734&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28734&r=float
