#48561 [NEW]: foreach (var as &var construct overwrites last element of array
| From: | huf at nws dot hu | Date: | Mon, 15 Jun 2009 18:16:33 +0000 |
| Subject: | #48561 [NEW]: foreach (var as &var construct overwrites last element of array | ||
| Groups: | php.bugs | ||
| Request: | Send a blank email to php-bugs+get-138330@lists.php.net to get a copy of this message | ||
From: huf at nws dot hu
Operating system: linux 2.6
PHP version: 5.2.9
PHP Bug Type: Arrays related
Bug description: foreach (var as &var construct overwrites last element of array
Description:
------------
it looks like foreach (var as &val) syntax leaves a refecence alive after
the last iteration. calling a subsequent foreach (var as val) (same
variable being used to iterate, but not as a ref now), the reference from
the first foreach is used to update the array...
Reproduce code:
---------------
<?php
$array = array(1, 2, 3);
foreach ($array as &$a) {
}
unset($a);
var_dump($array);
foreach ($array as $a) {
}
var_dump($array);
Expected result:
----------------
$array unchanged
Actual result:
--------------
$array changed.
--
Edit bug report at http://bugs.php.net/?id=48561&edit=1
--
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=48561&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=48561&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=48561&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=48561&r=fixedcvs
Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48561&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=48561&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=48561&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=48561&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=48561&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=48561&r=support
Expected behavior: http://bugs.php.net/fix.php?id=48561&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=48561&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=48561&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=48561&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48561&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=48561&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=48561&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=48561&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=48561&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=48561&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=48561&r=mysqlcfg