source/Core/Language.php
protected function _recodeLangArrayValues(&$aLangArray, $sCharset, $newEncoding)
    {
        foreach ($aLangArray as $sItemKey => &$sValue) {
            $sValue = iconv($sCharset, $newEncoding, $sValue);
        }
    }
protected function _recodeLangArrayValues(&$aLangArray, $sCharset, $newEncoding)
    {
        foreach ($aLangArray as $sItemKey => &$sValue) {
            $sValue = iconv($sCharset, $newEncoding, $sValue);
        }
    }
protected function _recodeLangArrayValues ( & $ aLangArray , $ sCharset , $ newEncoding ) { foreach ( $ aLangArray as $ sItemKey => & $ sValue ) { $ sValue = iconv ( $ sCharset , $ newEncoding , $ sValue ) ; } }
Goes through language array and recodes its values.

@param array  $aLangArray  language data
@param string $sCharset    charset which was used while making file
@param string $newEncoding charset which was used while making file

@deprecated since 6.0 (2016-12-07) As the shop installation is utf-8, this method will be removed.
Goes through language array and recodes its values .