From: m_v_ at gmx dot net
Operating system: Windows Vista Home Premium
PHP version: 5CVS-2007-05-25 (snap)
PHP Bug Type: PCRE related
Bug description: Preg_Split returns 3 matches with offset -1
Description:
------------
preg_split behaves unexpectet with certain pattern (see reproduce code):
It returns tripple offsets with the offsetvalue -1.
It gets even worse when you replace:
$reg = "~\{(literal)\}(.*?)\{(/literal)\}|\{(.*?)\}~s";
with
$reg = "~\{\*(literal)\}(.*?)\{(/literal)\}|\{(.*?)\}~s";
it simply returns several off those empty string, offset -1 triples.
P.S.: Hope it is actually a bug and not my ignorance of regex, however i
asked in a forum if anybody knew where the mistake is and i got no answer
and in addition the offset -1 mykes it look like a bug to me.
If it however should be a mistake in my regex it would be kind if you
would let me know how to put it.
Thx in advance
Reproduce code:
---------------
$reg = "~\{(literal)\}(.*?)\{(/literal)\}|\{(.*?)\}~s";
echo $reg.'<br>';
$res = preg_split( $reg, "df{g}s{literal}asd{as}d{/literal}", -1,
PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_OFFSET_CAPTURE );
echo '<pre>'.print_r($res, 1).'</pre>';
Expected result:
----------------
~\{(literal)\}(.*?)\{(/literal)\}|\{(.*?)\}~s
Array
(
[0] => Array
(
[0] => df
[1] => 0
)
[1] => Array
(
[0] => g
[1] => 3
)
[2] => Array
(
[0] => s
[1] => 5
)
[3] => Array
(
[0] => literal
[1] => 7
)
[4] => Array
(
[0] => asd{as}d
[1] => 15
)
[5] => Array
(
[0] => /literal
[1] => 24
)
[6] => Array
(
[0] =>
[1] => 33
)
)
Actual result:
--------------
~\{(literal)\}(.*?)\{(/literal)\}|\{(.*?)\}~s
Array
(
[0] => Array
(
[0] => df
[1] => 0
)
[1] => Array
(
[0] =>
[1] => -1
)
[2] => Array
(
[0] =>
[1] => -1
)
[3] => Array
(
[0] =>
[1] => -1
)
[4] => Array
(
[0] => g
[1] => 3
)
[5] => Array
(
[0] => s
[1] => 5
)
[6] => Array
(
[0] => literal
[1] => 7
)
[7] => Array
(
[0] => asd{as}d
[1] => 15
)
[8] => Array
(
[0] => /literal
[1] => 24
)
[9] => Array
(
[0] =>
[1] => 33
)
)
--
Edit bug report at http://bugs.php.net/?id=41496&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=41496&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=41496&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=41496&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=41496&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=41496&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=41496&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=41496&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=41496&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=41496&r=support
Expected behavior: http://bugs.php.net/fix.php?id=41496&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=41496&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=41496&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=41496&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=41496&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=41496&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=41496&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=41496&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=41496&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=41496&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=41496&r=mysqlcfg
