黄聪：用php判断当前用户访问网站是否为手机登录

现 在的网页大多采用DIV+CSS设计布局，只要针对移动访问者设计一个专门的CSS，但是移动用户的时候则调用该CSS样式。所以前提是要能够侦测到用户 是否采用移动设备，下面这个函数是PHP判断用户是否用手机访问你的网站，可以判断iphone，Android，Windows Mobile和一般的手机系统，已经能满足这一需求。

public function isMobile()

public function isMobile()
{  
        $useragent=isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : '';  
        $useragent_commentsblock=preg_match('|\(.*?\)|',$useragent,$matches)>0?$matches[0]:'';  
          
        function CheckSubstrs($substrs,$text)  
        {  
            foreach($substrs as $substr)  
                if(false!==strpos($text,$substr))  
                {  
                    return true;  
                }  
                    return false;  
        }  
          
        $mobile_os_list=array('Google Wireless Transcoder','Windows CE','WindowsCE','Symbian','Android','armv6l','armv5','Mobile','CentOS','mowser','AvantGo','Opera Mobi','J2ME/MIDP','Smartphone','Go.Web','Palm','iPAQ');  
              
        $mobile_token_list=array('Profile/MIDP','Configuration/CLDC-','160×160','176×220','240×240','240×320','320×240','UP.Browser','UP.Link','SymbianOS','PalmOS','PocketPC','SonyEricsson','Nokia','BlackBerry','Vodafone','BenQ','Novarra-Vision','Iris','NetFront','HTC_','Xda_','SAMSUNG-SGH','Wapaka','DoCoMo','iPhone','iPod');  
              
        $found_mobile=CheckSubstrs($mobile_os_list,$useragent_commentsblock) ||  
                  CheckSubstrs($mobile_token_list,$useragent);  
              
        if ($found_mobile)   
        {  
            return true;  
        }  
        else   
        {  
            return false;  
        }  
    }