php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #53525 php version 5.3.0 - error in unset var for when used in function
Submitted: 2010-12-12 09:27 UTC Modified: 2010-12-12 10:49 UTC
Votes:1
Avg. Score:4.0 ± 0.0
Reproduced:0 of 0 (0.0%)
From: shoja dot mehrdad at gmail dot com Assigned:
Status: Not a bug Package: Variables related
PHP Version: 5.3.4 OS: test in windows vista
Private report: No CVE-ID: None
View Add Comment Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If this is not your bug, you can add a comment by following this link.
If this is your bug, but you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: shoja dot mehrdad at gmail dot com
New email:
PHP Version: OS:

 

 [2010-12-12 09:27 UTC] shoja dot mehrdad at gmail dot com 
Description:
------------
$b = array(1, 2, 3);
function b(&$array)
{
  $array[0] = 1000; 
  
       unset($array);   // <=====
  
  $array    = array();   
  $array[1] = 2000;   
}
  b($b);
  print_r($b);

Test script:
---------------
Array
(
    [0] => 1000
    [1] => 2
    [2] => 3
)

Patches

Add a Patch

Pull Requests

Add a Pull Request

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2010-12-12 10:49 UTC] cataphract@php.net
-Status: Open +Status: Bogus
 [2010-12-12 10:49 UTC] cataphract@php.net 
Unset deletes the function local variable $array, not the global $b, despite $array and $b being in the same reference set. This is by design. When $array is recreated it already lost its connection to $b.

Note that $array and $b point to the same data, but $array doesn't "know" which other variables (in this case,the global $b) point to this same data its pointing, so it cannot really unset $b.
 
PHP Copyright © 2001-2024 The PHP Group
All rights reserved. 		Last updated: Sat May 11 00:01:31 2024 UTC