php、aspx 自动切换手机访问

$mobile_browser = '0';
 
if(preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
    $mobile_browser++;
}
 
if((strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml')>0) or ((isset($_SERVER['HTTP_X_WAP_PROFILE']) or isset($_SERVER['HTTP_PROFILE'])))) {
    $mobile_browser++;
}    
 
$mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'],0,4));
$mobile_agents = array(
    'w3c ','acs-','alav','alca','amoi','audi','avan','benq','bird','blac',
    'blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno',
    'ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-',
    'maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-',
    'newt','noki','oper','palm','pana','pant','phil','play','port','prox',
    'qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar',
    'sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-',
    'tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp',
    'wapr','webc','winw','winw','xda','xda-','Googlebot-Mobile');
 
if(in_array($mobile_ua,$mobile_agents)) {
    $mobile_browser++;
}
 
if (strpos(strtolower($_SERVER['ALL_HTTP']),'OperaMini')>0) {
    $mobile_browser++;
}
 
if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'windows')>0) {
    $mobile_browser=0;
}
 
if($mobile_browser>0) {
	header("Location: mobile.php"); //手機版
}else {
	header("Location: pc.php");  //電腦版
}

 protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.Headers["user-agent"] != null && Request.Headers["user-agent"].ToLower().ToString().IndexOf("windows") != -1)
        {                        
            Response.Redirect("pc.aspx"); //電腦版 
        }
        else
        {
            Response.Redirect("mobile.aspx"); //手機版
        }
    }

转：http://www.minwt.com/mobilewebdesign/2501.html/comment-page-1#comments