Sabberworm\CSS\Parser::streql PHP Метод

    private function streql($sString1, $sString2, $bCaseInsensitive = true)
    {
        if ($bCaseInsensitive) {
            return $this->strtolower($sString1) === $this->strtolower($sString2);
        } else {
            return $sString1 === $sString2;
        }
    }