#31541 [Opn->Bgs]: unserializing a PHP 4.2.2 array with "-1" as a key

ID: 31541 Updated by: sniper@php.net Reported By: mop at globalpark dot de -Status: Open +Status: Bogus Bug Type: Unknown/Other Function Operating System: Linux PHP Version: 5.0.3 New Comment: This was bug that is fixed now: http://bugs.php.net/bug.php?id=21918&edit=1 Previous Comments: ------------------------------------------------------------------------ [2005-01-13 17:44:29] mop at globalpark dot de Description: ------------ We have been using PHP 4.2.2 a while ago and saved serialized data in our database. Since we moved to PHP5 we had some problems unserializing some of this data. When "-1" (string) as an array key was used it appeared as a string in serialized form (PHP 4.2.2). PHP 4.3.10 and PHP 5.0.3 produce a serialized string with an integer. Using the PHP 4.2.2 generated data with PHP 4.3.10 works as expected but when we try to access the array using PHP 5.0.3 it doesn't work. That's really annoying. Reproduce code: --------------- 1. Script <?php print serialize(array("-1"=>-1))."\n"; ?> 2. Script <?php $string='a:1:{s:2:"-1";s:2:"-1";}'; $arr=unserialize($string); var_dump($arr["-1"]); var_dump($arr[-1]); ?> // PHP 4.2.2 and PHP 4.3.10 => OK // PHP 5.0.3 => both are NULL Expected result: ---------------- PHP 5.0.3 should return -1 in both cases Actual result: -------------- PHP 5.0.3 returns NULL ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=31541&edit=1