有时候很实用在一些场合，留住备用吧

复制代码 代码如下:

function is_mobile_request()

{

$_SERVER["ALL_HTTP"] = isset($_SERVER["ALL_HTTP"]) ? $_SERVER["ALL_HTTP"] : "";

$mobile_browser = "0";

if(preg_match("/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i", strtolower($_SERVER["HTTP_USER_AGENT"])))

$mobile_browser++;

if((isset($_SERVER["HTTP_ACCEPT"])) and (strpos(strtolower($_SERVER["HTTP_ACCEPT"]),"application/vnd.wap.xhtml+xml") !== false))

$mobile_browser++;

if(isset($_SERVER["HTTP_X_WAP_PROFILE"]))

$mobile_browser++;

if(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-"

);

if(in_array($mobile_ua, $mobile_agents))

$mobile_browser++;

if(strpos(strtolower($_SERVER["ALL_HTTP"]), "operamini") !== false)

$mobile_browser++;

// Pre-final check to reset everything if the user is on Windows

if(strpos(strtolower($_SERVER["HTTP_USER_AGENT"]), "windows") !== false)

$mobile_browser=0;

// But WP7 is also Windows, with a slightly different characteristic

if(strpos(strtolower($_SERVER["HTTP_USER_AGENT"]), "windows phone") !== false)

$mobile_browser++;

if($mobile_browser>0)

return true;

else

return false;

}

文章来源：http://yi1.com.cn/posts/781

php 根据HTTP_USER_AGENT 判断用户浏览器类型

复制代码 代码如下:

function browsers(){

global $HTTP_USER_AGENT ;

if (isset($HTTP_USER_AGENT)){

$sAgent = $HTTP_USER_AGENT;

}else{

$sAgent = $_SERVER["HTTP_USER_AGENT"];

}

if (strpos($sAgent,"MSIE") !== false && strpos($sAgent,"mac") === false && strpos($sAgent,"Opera") === false){

$iVersion = (float)substr($sAgent,strpos($sAgent,"MSIE") + 5,3);

return ($iVersion >= 5.5) ;

}else if (strpos($sAgent,"Gecko/") !== false){

$iVersion = (int)substr($sAgent,strpos($sAgent,"Gecko/") + 6,8);

return ($iVersion >= 20030210) ;

}else{

return false;

}

}