php - discuzX3 开启手机版,访问网站会自动判断是来自桌面端还是移动端，是怎么做的？

Question

是在PHP中做的判断，还是在web server中做的？
是在index.php中吗？这个文件前面有对host做处理，但没看到和user agent有关的逻辑。想请教一下discuzX3是在什么地方，如何做判断的?
谢谢啦～

Answer 1

没看到和user agent有关的逻辑

你居然没找到！

function checkmobile() {
    global $_G;
    $mobile = array();
    static $touchbrowser_list =array('iphone', 'android', 'phone', 'mobile', 'wap', 'netfront', 'java', 'opera mobi', 'opera mini',
                'ucweb', 'windows ce', 'symbian', 'series', 'webos', 'sony', 'blackberry', 'dopod', 'nokia', 'samsung',
                'palmsource', 'xda', 'pieplus', 'meizu', 'midp', 'cldc', 'motorola', 'foma', 'docomo', 'up.browser',
                'up.link', 'blazer', 'helio', 'hosin', 'huawei', 'novarra', 'coolpad', 'webos', 'techfaith', 'palmsource',
                'alcatel', 'amoi', 'ktouch', 'nexian', 'ericsson', 'philips', 'sagem', 'wellcom', 'bunjalloo', 'maui', 'smartphone',
                'iemobile', 'spice', 'bird', 'zte-', 'longcos', 'pantech', 'gionee', 'portalmmm', 'jig browser', 'hiptop',
                'benq', 'haier', '^lct', '320x320', '240x320', '176x220', 'windows phone');
    static $wmlbrowser_list = array('cect', 'compal', 'ctl', 'lg', 'nec', 'tcl', 'alcatel', 'ericsson', 'bird', 'daxian', 'dbtel', 'eastcom',
            'pantech', 'dopod', 'philips', 'haier', 'konka', 'kejian', 'lenovo', 'benq', 'mot', 'soutec', 'nokia', 'sagem', 'sgh',
            'sed', 'capitel', 'panasonic', 'sonyericsson', 'sharp', 'amoi', 'panda', 'zte');

    static $pad_list = array('ipad');

    $useragent = strtolower($_SERVER['HTTP_USER_AGENT']);

    if(dstrpos($useragent, $pad_list)) {
        return false;
    }
    if(($v = dstrpos($useragent, $touchbrowser_list, true))){
        $_G['mobile'] = $v;
        return '2';
    }
    if(($v = dstrpos($useragent, $wmlbrowser_list))) {
        $_G['mobile'] = $v;
        return '3'; //wml版
    }
    $brower = array('mozilla', 'chrome', 'safari', 'opera', 'm3gate', 'winwap', 'openwave', 'myop');
    if(dstrpos($useragent, $brower)) return false;

    $_G['mobile'] = 'unknown';
    if(isset($_G['mobiletpl'][$_GET['mobile']])) {
        return true;
    } else {
        return false;
    }
}