ID: 46068
Comment by: andrew at linuxjedi dot co dot uk
Reported By: sv4php at fmethod dot com
Status: Open
Bug Type: PCRE related
Operating System: Windows, Linux
PHP Version: 5.2.6
New Comment:
Tried in PHP 5.2.4, also tried the (?P<name>pattern) method, same
problem.
Previous Comments:
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[2008-09-12 19:54:10] sv4php at fmethod dot com
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"
}
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Edit this bug report at http://bugs.php.net/?id=46068&edit=1
