php判断客户端UserAgent

1 <?php
 2 //echo $_SERVER['HTTP_USER_AGENT'];exit;
 3 //var_dump(stripos($_SERVER['HTTP_USER_AGENT'], "Android"));exit;
 4 header("Content-Type:text/html;Charset=UTF-8");
 5 class UserAgent
 6 {
 7     
 8     public static function IsIphone()
 9     {
10         return stripos($_SERVER['HTTP_USER_AGENT'], "iphone") !== false;
11     }
12     public static function IsIpad()
13     {
14         return stripos($_SERVER['HTTP_USER_AGENT'], "ipad") !== false;
15     }
16     public static function IsiPod()
17     {
18         return stripos($_SERVER['HTTP_USER_AGENT'], "ipod") !== false;
19     }
20 
21     public static function IsIos()
22     {
23 
24         return (self::IsIphone() || self::IsIpad() || self::IsiPod());
25     }
26 
27     public static function IsAndroid()
28     {
29         return stripos($_SERVER['HTTP_USER_AGENT'], "android") !== false;
30     }
31 
32 }
33 ?>