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Bug #76528 PCRE2 issues a warning about invalid ranges
Submitted: 2018-06-25 19:48 UTC Modified: 2018-06-26 01:48 UTC
From: mail at jens-hausdorf dot de Assigned:
Status: Duplicate Package: PCRE related
PHP Version: 7.3.0alpha2 OS: Windows 10 Home
Private report: No CVE-ID: None
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 [2018-06-25 19:48 UTC] mail at jens-hausdorf dot de 
Description:
------------
It's working fine in 7.2 however.

Test script:
---------------
<?php
preg_match('/^[\\w-\\.]+$/', 'admin.general.canViewPrivateUserOptions')
?>

Expected result:
----------------
no php warning

Actual result:
--------------
PHP Warning:  preg_match(): Compilation failed: invalid range in character class at offset 4

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 [2018-06-25 20:12 UTC] danack@php.net
-Status: Open +Status: Feedback
 [2018-06-25 20:12 UTC] danack@php.net 
Can you check - that looks like the error message is right, and the pattern probably isn't what you want.

As you have it in your script, it means "any character that is between any word character to a dot", which doesn't make sense.

If the pattern was instead "[\w\.]" that would mean any word character or a dot.....which is possibly what you meant?

Testing at: https://3v4l.org/66NDo

preg_match('/^[\w\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches);
var_dump($matches);

preg_match('/^[\w-\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches);
var_dump($matches);

preg_match('/^[\\w-\\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches);
var_dump($matches);
 [2018-06-26 01:48 UTC] requinix@php.net
-Status: Feedback +Status: Duplicate
 [2018-06-26 01:48 UTC] requinix@php.net 
See bug #76188
 
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