[TYPO3-core] RFC #12196: PHP warning in FE with activated DLOG and mbstring set as t3lib_cs_utils

[Rupert Germann]

Hi,

this is a SVN patch request.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=12196

Branches: Trunk

Problem:
with the following settings PHP shows a warning when viewing pages in FE:

$TYPO3_CONF_VARS['SYS']['enable_DLOG'] = 1;
$TYPO3_CONF_VARS['SYS']['t3lib_cs_utils'] = 'mbstring';

PHP Warning: mb_substr() [<a 
href='function.mb-substr'>function.mb-substr</a>]: Unknown encoding "" 
in /srv/SVN/forge.typo3.org/Core/trunk/t3lib/class.t3lib_cs.php line 1481

This is caused by function t3lib_div::arrayToLogString() which calls 
t3lib_div::fixed_lgd_cs at a point where no renderCharset has been set 
in TSFE yet.

Solution:
use $GLOBALS['TSFE']->defaultCharSet if $GLOBALS['TSFE']->renderCharset 
is empty

greets
rupert