Edit report at https://bugs.php.net/bug.php?id=55811&edit=1
ID: 55811
Updated by: larue...@php.net
Reported by: sajidm at gmx dot net
Summary: preg_match recursive does not work with start of
subject ^ option
-Status: Open
+Status: Bogus
Type: Bug
Package: *Regular Expressions
Operating System: openSuse 11.1(Linux 2.6.27)
PHP Version: 5.3.8
Block user comment: N
Private report: N
New Comment:
Sorry, but your problem does not imply a bug in PHP itself. For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions. Due to the volume
of reports we can not explain in detail here why your report is not
a bug. The support channels will be able to provide an explanation
for you.
Thank you for your interest in PHP.
Previous Comments:
------------------------------------------------------------------------
[2011-09-30 05:05:11] larue...@php.net
so as I said above, this is not a bug, I am going to mark this as bogus,
thanks
for you time to write these to us.
------------------------------------------------------------------------
[2011-09-29 15:21:55] larue...@php.net
IMO the (?R) means match the regular pattern itself, in your case it like
(^pattern(^pattern**** , so I think the result was worked `as expect`.
------------------------------------------------------------------------
[2011-09-29 14:03:09] sajidm at gmx dot net
Workaround: use wrapper function for preg_match
function preg_match_ex($pattern, $str, &$m, $recursive = false)
{
if($recursive)
{
$pattern = "$pattern(\s*,\s*$pattern)*";
}
return preg_match("!^($pattern)!i", $str, $m);
}
Usage: preg_match_ex("\d+", "22222, 33333, 44444 ,55555,abcd,defg,4537, 6537,
8774", true);
------------------------------------------------------------------------
[2011-09-29 09:45:38] sajidm at gmx dot net
Description:
------------
when i try
php -r 'preg_match("!((\d+)(\s*,\s*(?R))*)$!","22222, 33333, 44444 ,55555 ,
abcd,defg,4537, 6537, 8774", $m);echo print_r($m,1);'
Array
(
[0] => 4537, 6537, 8774
[1] => 4537, 6537, 8774
[2] => 4537
[3] => , 6537, 8774
)
Similarly it should work with start of subject ^ option but it does not work.
It works fine without start of subject ^ option
Test script:
---------------
php -r 'preg_match("!^((\d+)(\s*,\s*(?R))*)!","22222, 33333, 44444 ,55555 ,
abcd,defg,4537, 6537, 8774", $m);echo print_r($m,1);'
Expected result:
----------------
Array
(
[0] => 22222, 33333, 44444 ,55555
[1] => 22222, 33333, 44444 ,55555
[2] => 22222
[3] => , 33333, 44444 ,55555
)
Actual result:
--------------
Array
(
[0] => 22222
[1] => 22222
[2] => 22222
)
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=55811&edit=1
