#45369 [Opn->Fbk]: strange behaviour on saving arrays with moved cursors in Session

From: Date: Tue, 01 Jul 2008 09:49:13 +0000
Subject: #45369 [Opn->Fbk]: strange behaviour on saving arrays with moved cursors in Session
References: 1  Groups: php.bugs 
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 ID:               45369
 Updated by:       jani@php.net
 Reported By:      thomas dot meike at nic dot at
-Status:           Open
+Status:           Feedback
 Bug Type:         Arrays related
 Operating System: Linux Unix Windows
 PHP Version:      5.2.6
 New Comment:

You should reset() it "manually", I don't see any wrong behaviour here.
Where in the manual does it say that assiging to the "magic" $_SESSION
superglobal the array is reset automatically??


Previous Comments:
------------------------------------------------------------------------

[2008-06-26 15:31:50] thomas dot meike at nic dot at

Description:
------------
you define an array
step through ONLY SOME elements using list-each structure
stepping through you perform some changes on data
finishing the while-structure the array is saved in session
let's say, somewhere else in your businesslogic you need these session
data once more:
you initiate a variable with the recently saved session array 
the PROBLEM now: the variable is initiated with the array NOT RESETTED
as defined in documentation an array assigned to a variable has to be
resetted
the problem exists also with php version 5.2.5


Reproduce code:
---------------
session_start();		
$arrL =
array("test1","test2","test3","test4","test5","test6","test7","test8","test9","test10");
if(!isset($_SESSION['DATA'])){
	$_SESSION['DATA']=$arrL;
}
			$counter = 3;
			$arrSessData = $_SESSION['DATA'];
			while((list($index, $value) = each($arrSessData)) && ($counter > 0)
) {
				$arrSessData[$index] =  '_test_' . $value;
				$counter--;
			}
			//store changes in session
			$_SESSION['DATA']=$arrSessData;
			//somewhere else within the businesslogic, init local variable and
step through
			$arrSessDataProc = $_SESSION['DATA'];
			while((list($index, $value) = each($arrSessDataProc)) ){
				echo "<br>" . $index . ' ' . $value;
			}


Expected result:
----------------
0 _test_test1
1 _test_test2
2 _test_test3
3 test4
4 test5
5 test6
6 test7
7 test8
8 test9
9 test10

Actual result:
--------------
4 test5
5 test6
6 test7
7 test8
8 test9
9 test10


------------------------------------------------------------------------


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