用PHP判断客户端是否是手机

 1 <?php
 2 function isMobile(){
 3     $useragent = isset($_SERVER['HTTP_USER_AGENT'])? $_SERVER['HTTP_USER_AGENT']: '';
 4     $mobile_list = array('Google Wireless Transcoder','Windows CE','WindowsCE',
 5         'Symbian', 'Android','armv6l','armv5','Mobile','CentOS','mowser',
 6         'AvantGo','Opera Mobi','J2ME/MIDP',
 7         'Smartphone','Go.Web','Palm','iPAQ',
 8         'Profile/MIDP', 'Configuration/CLDC-',
 9         '160×160','176×220','240×240','240×320','320×240',
10         'UP.Browser','UP.Link','SymbianOS','PalmOS','PocketPC','SonyEricsson',
11         'Nokia','BlackBerry','Vodafone',
12         'BenQ','Novarra-Vision','Iris','NetFront','HTC_','Xda_','SAMSUNG-SGH',
13         'Wapaka','DoCoMo','iPhone','iPod'
14     );
15     foreach($mobile_list as $keyword){
16         if(false !== strpos($useragent, $keyword)){
17             return true;
18         }
19     }
20     return false;
21 }
22 echo isMobile()? 'mobile': 'pc';