Веб тема от selemet

/*
    -----------------------------------------------------------------
    Определение мобильного браузера
    -----------------------------------------------------------------
    */
    private function mobile_detect()
    {
        if (!class_exists('Mobile_Detect'))
            return 0;
        $detect = new Mobile_Detect;
        $isMobile = $detect->isMobile();
        $isTablet = $detect->isTablet();
        $layout = array(0, 1, 2);
        if (isset($_REQUEST['type']))
            $type = intval($_REQUEST['type']);
        else {
            if (empty($_SESSION['is_mobile']))
                $type = ($isMobile ? ($isTablet ? 1 : 0) : 2);
            else
                $type = $_SESSION['is_mobile'];
        }
        if (!in_array($type, $layout))
            $type = 0;

        $_SESSION['is_mobile'] = $type;
        return $type;
    }