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Bug #40028 Wrong behaviour of next() and prev()
Submitted: 2007-01-05 09:59 UTC Modified: 2007-01-05 22:10 UTC
From: prometheus__0 at hotmail dot com Assigned:
Status: Not a bug Package: Scripting Engine problem
PHP Version: 5.2.1RC2 OS: Linux Sles10
Private report: No CVE-ID: None
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 [2007-01-05 09:59 UTC] prometheus__0 at hotmail dot com 
Description:
------------
the bug report with id 27782 is the same as this one
http://bugs.php.net/bug.php?id=27782

As stated in documentation, next() returns the NEXT element in the array
and THEN increases internal pointer. Thus, when this function returns
FALSE, I expect the internal pointer to be in the last position, thus
prev() should return end()-1 element.

i tested it with older php5 versions and it seems this bug occures within all php5 versions

bug http://bugs.php.net/bug.php?id=37598 occures too

Reproduce code:
---------------
<?php
$a = array("a", "b", "c");
reset($a);
while (next($a) !== FALSE);
var_dump(prev($a));
?>

Expected result:
----------------
string(1) "b"

Actual result:
--------------
bool(false)

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 [2007-01-05 22:10 UTC] iliaa@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

Original patch was reverted due to the BC issues it introduces 
in relation to the key() function. The current behavior is 
designated as expected.
 
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