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Bug #71019 preg_match length
Submitted: 2015-12-03 20:22 UTC Modified: 2015-12-03 22:40 UTC
From: nospam4me at diamantnetz dot de Assigned:
Status: Not a bug Package: PCRE related
PHP Version: 5.6.16 OS: Linux Ubuntu
Private report: No CVE-ID: None
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 [2015-12-03 20:22 UTC] nospam4me at diamantnetz dot de 
Description:
------------
1. input one or more of the german äÄöÖüÜß in a html form 30 times (= max length)
2. Submit $_POST['passwort']
3. You get an error ("Fehler")

The same with i.E. 30 digits or a-Z doesnt produce an error.

An input of german äÄöÖüÜß less then 30 times doesnt produce an error.

A really not so nice fault ;-)

Perhaps the fault is corresponding with utf-8

Test script:
---------------
header("Content-Type: text/html; charset=utf-8");
if( (!@(preg_match('/^[0-9a-zA-ZäÄöÖüÜß&?!%@#,\.:_=+-]{1,30}$/',$_POST['passwort']))) ) echo 'Fehler';

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 [2015-12-03 22:40 UTC] requinix@php.net
-Status: Open +Status: Not a bug -Package: Scripting Engine problem +Package: PCRE related
 [2015-12-03 22:40 UTC] requinix@php.net 
Sorry, but your problem does not imply a bug in PHP itself.  For a
list of more appropriate places to ask for help using PHP, please
visit http://www.php.net/support.php as this bug system is not the
appropriate forum for asking support questions.  Due to the volume
of reports we can not explain in detail here why your report is not
a bug.  The support channels will be able to provide an explanation
for you.

Thank you for your interest in PHP.

You must use the /u flag in your regex if you want UTF-8 support.
http://php.net/manual/en/reference.pcre.pattern.modifiers.php
 
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