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Bug #48433 Case related bug in mb_ereg_* lookbehind
Submitted: 2009-05-30 09:24 UTC Modified: 2009-09-26 01:00 UTC
From: l_done at tiscali dot it Assigned:
Status: No Feedback Package: mbstring related
PHP Version: 5.2.9 OS: Linux/OSX
Private report: No CVE-ID: None
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 [2009-05-30 09:24 UTC] l_done at tiscali dot it 
Description:
------------
When using alternation in negative lookbehind in a case-insensitive regexp with mb_ereg* functions, if the alternatives are of different lengths, the first alternative is treated in a "case-sensitive" way.

Reproduce code:
---------------
$text='
aA 1
bBb 2
cCcc 3
dDddd 4
';

$pattern='(?<!aa |bbb |cccc )[1-4]';

mb_ereg_search_init($text,$pattern,'i');
$r=mb_ereg_search_pos();
while ($r!==false) {
	$match=mb_ereg_search_getregs();
	print_r($match);
	$r=mb_ereg_search_pos();
}

Expected result:
----------------
Array
(
    [0] => 4
)


Actual result:
--------------
Array
(
    [0] => 1
)
Array
(
    [0] => 4
)

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 [2009-05-30 09:47 UTC] l_done at tiscali dot it 
I tested this with those php versions:

PHP 5.2.9 with Suhosin-Patch 0.9.7 (cli) (built: Mar 25 2009 12:11:14) (archlinux)
PHP 5.2.8 (cli) (built: Feb  5 2009 21:21:13) (osx)
PHP 5.2.6-3ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 23 2009 14:37:14) (ubuntu 9.04)
PHP 5.2.4-2ubuntu5.6 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 17 2009 14:31:37) (ubuntu 8.04)
 [2009-09-18 19:06 UTC] jani@php.net 
Please try using this snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/
 [2009-09-26 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 
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