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Bug #60918 Buggy grapheme_substr()
Submitted: 2012-01-28 14:10 UTC Modified: 2012-01-29 09:41 UTC
From: nicolas dot grekas+php at gmail dot com Assigned:
Status: Closed Package: intl (PECL)
PHP Version: 5.3.9 OS:
Private report: No CVE-ID: None
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 [2012-01-28 14:10 UTC] nicolas dot grekas+php at gmail dot com 
Description:
------------
See test script.

Test script:
---------------
<?php

var_export(grapheme_substr('deja', 1, -1));
var_export(grapheme_substr('déjà', 1, -1));

var_export(grapheme_substr('deja', 1, 5));
var_export(grapheme_substr('déjà', 1, 5));

Expected result:
----------------
"ej"
"éj"

"eja"
"éjà"

Actual result:
--------------
"ej"
false

"eja"
false

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 [2012-01-29 01:57 UTC] rasmus@php.net
-Status: Open +Status: Feedback
 [2012-01-29 01:57 UTC] rasmus@php.net 
I was unable to reproduce this. Note that the documentation states that the 
input string must be valid UTF-8. I suspect you are feeding it non-UTF-8.

Try copying and pasting your example script from this web page (which is UTF-8). 
When I did that, my output was:

'ej'
'éj'
'eja'
'éjà'
 [2012-01-29 09:41 UTC] nicolas dot grekas+php at gmail dot com
-Status: Feedback +Status: Closed
 [2012-01-29 09:41 UTC] nicolas dot grekas+php at gmail dot com 
You are right, I messed up UTF-8.
What I was experimenting is http://bugs.php.net/55562 under PHP5.3.6-ubuntu
Before reporting I tested under 5.3.9, but forgot to properly encode in UTF-8...
 
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