ID: 31576
Updated by: [EMAIL PROTECTED]
-Summary: mbregex fails to recognise word boundary markers
[[:<:]] on Windows XP
Reported By: mw at lanfear dot com
-Status: Open
+Status: Bogus
Bug Type: mbstring related
-Operating System: Windows XP SP1 Only
+Operating System: irrelevant
-PHP Version: 5.0.3
+PHP Version: *
New Comment:
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php
[[:<:]] [[:>:]]
These styles of regular expression are not official part
of POSIX standard.
http://www.opengroup.org/onlinepubs/009695399/basedefs/
xbd_chap09.html
The implementation used in ereg*() is originally
extended in some way, probably to use with Tcl.
Better use /b and /B instead for more compatibility.
Previous Comments:
------------------------------------------------------------------------
[2005-01-16 20:39:47] mw at lanfear dot com
Description:
------------
The mbregex compiler appears to have a bug in it via which it cannot
compile the word boundary markers [[:<:]] and [[:>:]] on the Windows
version of PHP. (IIS5.1, PHP 5.0.3)
On the Unix version of PHP, these boundaries work fine, with or without
the mbstring and mbregex extension enabled, and the Windows versions of
PHP will also recognise these markers IFF the mbstring.dll is
disabled.
Given the string:
$strr "This is an ip address: 192.168.1.1 ..."
The following:
ereg("[[:<:]][0-9]+\.[0-9]+\.[0-9]+\.[0-9]+[[:>:]]", $strr, $regex);
will generate the following error in windows (IIS5.1, PHP 5.0.3),
provided mbstring is enabled:
Warning: mb_ereg() [function.mb-ereg]: mbregex compile err: invalid
POSIX bracket type in c:\Inetpub\wwwroot\regex_test.php on line 5
NULL
Reproduce code:
---------------
<?php
$ipaddrs = "192.168.12.22, then followed by 192.168.1.1";
ereg("[[:<:]][0-9]+\.[0-9]+\.[0-9]+\.[0-9]+[[:>:]]", $ipaddrs,
$regex);
var_dump($regex);
?>
Expected result:
----------------
array(1) { [0]=> string(13) "192.168.12.22" }
Actual result:
--------------
Warning: mb_ereg() [function.mb-ereg]: mbregex compile err: invalid
POSIX bracket type in c:\Inetpub\wwwroot\regex_test.php on line 5
NULL
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=31576&edit=1
