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Doc Bug #53935 Wrong Return Value for substr()
Submitted: 2011-02-05 22:38 UTC Modified: 2011-02-10 16:32 UTC
From: miqrogroove at gmail dot com Assigned: vrana (profile)
Status: Closed Package: Documentation problem
PHP Version: 5.2.17 OS: Linux
Private report: No CVE-ID: None
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 [2011-02-05 22:38 UTC] miqrogroove at gmail dot com 
Description:
------------
---
From manual page: http://www.php.net/function.substr#Changelog
---

According to the "Changelog" this function should return FALSE for substr('abc', -
7) in 5.2.2+.  The actual return value is 'abc' in version 5.2.16.  Did not test 
5.2.17, but the manual is obviously wrong.

Test script:
---------------
echo substr('abc', -7);

Expected result:
----------------
No output.

Actual result:
--------------
abc

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 [2011-02-10 12:35 UTC] vrana@php.net 
Automatic comment from SVN on behalf of vrana
Revision: http://svn.php.net/viewvc/?view=revision&revision=308179
Log: Changelog (doc bug #53935)
 [2011-02-10 12:36 UTC] vrana@php.net
-Status: Open +Status: Closed -Assigned To: +Assigned To: vrana
 [2011-02-10 12:36 UTC] vrana@php.net 
This bug has been fixed in the documentation's XML sources. Since the
online and downloadable versions of the documentation need some time
to get updated, we would like to ask you to be a bit patient.

Thank you for the report, and for helping us make our documentation better.

5.2.2 - 5.2.6: ... Other versions get the string from start.
 [2011-02-10 13:11 UTC] salathe@php.net
-Status: Closed +Status: Re-Opened
 [2011-02-10 13:11 UTC] salathe@php.net 
The changelog used to refer to the behaviour in cases such as substr('abc',2,-2).  
As detailed in the changelog before today's amendment, prior to 5.2.2 that case 
returns an empty string and otherwise returns false.

The change in behaviour for the substr('abc',-7) case should be detailed 
separately.
 [2011-02-10 16:32 UTC] vrana@php.net
-Status: Re-Opened +Status: Closed
 [2011-02-10 16:32 UTC] vrana@php.net 
Old changelog was wrong. substr("abc", -7) returns "abc" in PHP 5.1.6.
 
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