From: ch+php at 1111-internet dot com
Operating system: n/a
PHP version: 4.4.7
PHP Bug Type: PCRE related
Bug description: preg_* not capturing regex optional last parenthesis value if
empty
Description:
------------
The code and results attached show two examples of preg_* demonstrating
how an optional parenthesis match at the end of a regular expression is not
being captured if the optional condition is not matched.
I think this is a bug, because if the optional parenthesis is not the last
one in the regex, the empty value IS captured - which suggests that it
should not be omitted just because it happens to be the last one.
Reproduce code:
---------------
preg_match_all("/(1)(23)?/", "12314123", $match, PREG_SET_ORDER);
print_r($match);
print_r(preg_split("/(1)(23)?/", "12314123", -1,
PREG_SPLIT_DELIM_CAPTURE));
Expected result:
----------------
Array
(
[0] => Array
(
[0] => 123
[1] => 1
[2] => 23
)
[1] => Array
(
[0] => 1
[1] => 1
[2] =>
)
[2] => Array
(
[0] => 123
[1] => 1
[2] => 23
)
)
Array
(
[0] =>
[1] => 1
[2] => 23
[3] =>
[4] => 1
[5] =>
[6] => 4
[7] => 1
[8] => 23
[9] =>
)
Actual result:
--------------
Array
(
[0] => Array
(
[0] => 123
[1] => 1
[2] => 23
)
[1] => Array
(
[0] => 1
[1] => 1
)
[2] => Array
(
[0] => 123
[1] => 1
[2] => 23
)
)
Array
(
[0] =>
[1] => 1
[2] => 23
[3] =>
[4] => 1
[5] => 4
[6] => 1
[7] => 23
[8] =>
)
--
Edit bug report at http://bugs.php.net/?id=43104&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43104&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43104&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43104&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43104&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43104&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43104&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43104&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43104&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43104&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43104&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43104&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43104&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43104&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43104&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43104&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43104&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43104&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43104&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43104&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43104&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43104&r=mysqlcfg
