WordpressImporter::_mkdatetime PHP Method

    function _mkdatetime($local, $utc, $localstr, $fallbackTZOffset)
    {
        $tzoffset = $utc !== false ? $local->time - $utc->time : $fallbackTZOffset;
        if ($tzoffset !== 0) {
            return new GBDateTime(str_replace(' ', 'T', $localstr) . ($tzoffset < 0 ? '-' : '+') . date('Hi', $tzoffset));
        } else {
            return $utc;
        }
    }