Doc #67041 [Ana->Dup]: POSIX character classes and UTF-8

From: Date: Wed, 22 Jun 2016 16:03:01 +0000
Subject: Doc #67041 [Ana->Dup]: POSIX character classes and UTF-8
References: 1  Groups: php.doc.bugs 
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Edit report at https://bugs.php.net/bug.php?id=67041&edit=1

 ID:                 67041
 Updated by:         cmb@php.net
 Reported by:        cmbecker69 at gmx dot de
 Summary:            POSIX character classes and UTF-8
-Status:             Analyzed
+Status:             Duplicate
 Type:               Documentation Problem
 Package:            PCRE related
 Operating System:   *
 PHP Version:        5.5.11
-Assigned To:        
+Assigned To:        cmb
 Block user comment: N
 Private report:     N

 New Comment:

This issue had been reported again as bug #72353, and already
fixed, so I'm marking this ticket as duplicate.


Previous Comments:
------------------------------------------------------------------------
[2014-11-10 21:56:54] cmbecker69 at gmx dot de

> The PREG manual states[1]:

I had forgotten the footnote. It should have been

[1] <http://php.net/manual/en/regexp.reference.character-classes.php>

> However, I couldn't see relevant changes that cause this.

It seems to me that the change might be caused by item 9 in the
changelog of Version 8.10 25-Jun-2010[2].

[2] <http://www.pcre.org/changelog.txt>

------------------------------------------------------------------------
[2014-04-15 22:51:57] dm@php.net

It seems that behavior changed in 5.3.4 (PCRE updated to 8.10). However, I couldn't see
relevant changes that cause this. Will look further, if anything, docs can be updated to reflect it.

Thanks for report.

------------------------------------------------------------------------
[2014-04-08 14:37:32] trainmaster at gmx dot net

Introduced with 5.3.4? http://3v4l.org/RNhTU

------------------------------------------------------------------------
[2014-04-07 21:48:02] cmbecker69 at gmx dot de

Description:
------------
The PREG manual states[1]:

| In UTF-8 mode, characters with values greater than 128 do not
| match any of the POSIX character classes.

However, that is not necessarily true, so the statement should be
changed appropriately.

Test script:
---------------
var_dump(preg_match('/^[[:alnum:]]$/u', "\xc3\x84"));

Expected result:
----------------
int(0) // expected according to the current documentation

Actual result:
--------------
int(1)


------------------------------------------------------------------------



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Edit this bug report at https://bugs.php.net/bug.php?id=67041&edit=1


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