From: sv4php at fmethod dot com
Operating system: Windows, Linux
PHP version: 5.2.6
PHP Bug Type: PCRE related
Bug description: Incorrently reported PCRE / PREG regex named pattern
Description:
------------
Under certain circumstanced, the $matches in a preg_match contain the
wrong name of a named subpattern. Refer to the example below.
Note the conditions:
1. The named patterns have the same numeric index (as they are in a switch
group: (?| .. | .. | .. ) ).
2. The last name alphabetically is always reported, never mind of the
pattern order and the actual pattern matched ('zoo' is last after 'poo',
'hoo' alphabetically in the example below).
Reproduced on Linux and Windows.
Reproduce code:
---------------
$c = 'yo';
$p = '/(?|(?<poo>yo)|(?<hoo>fo)|(?<zoo>ho))/';
preg_match ($p, $c, $m);
var_dump($m);
Expected result:
----------------
array(3) {
[0]=>
string(2) "yo"
["poo"]=> <-- notice the name
string(2) "yo"
[1]=>
string(2) "yo"
}
Actual result:
--------------
array(3) {
[0]=>
string(2) "yo"
["zoo"]=> <-- notice the name
string(2) "yo"
[1]=>
string(2) "yo"
}
--
Edit bug report at http://bugs.php.net/?id=46068&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=46068&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=46068&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=46068&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=46068&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=46068&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=46068&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=46068&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=46068&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=46068&r=support
Expected behavior: http://bugs.php.net/fix.php?id=46068&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=46068&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=46068&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=46068&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46068&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=46068&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=46068&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=46068&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=46068&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=46068&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=46068&r=mysqlcfg
