PHP CodeBase: 判断用户是否手机访问

随着移动设备的普及，网站也会迎来越来越多移动设备的访问。用适应PC的页面，很多时候对手机用户不友好，那么有些时候，我们需要判断用户是否用手机访问，如果是手机的话，就跳转到指定的手机友好页面。这里就介绍一下，如何判断用户是否用手机访问。

自定义的函数如下：

01 $agent = check_wap();
02 if( $agent )
03 {
04     header('Location: http://www.nowamagic.net');
05     exit;
06 }
07
08 // check if wap
09 function check_wap(){
10     // 先检查是否为wap代理，准确度高
11     if(stristr($_SERVER['HTTP_VIA'],"wap")){
12         return true;
13     }
14     // 检查浏览器是否接受 WML.
15     elseif(strpos(strtoupper($_SERVER['HTTP_ACCEPT']),"VND.WAP.WML") > 0){
16         return true;
17    }
18    //检查USER_AGENT
19    elseif(preg_match('/(blackberry|configuration\/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker\/M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i', $_SERVER['HTTP_USER_AGENT'])){
20         return true;
21     }
22     else{
23         return false;
24    }
25 }

再来一个从PHP框架剥离的判断是否为手机移动终端的函数：

01 function is_mobile_request()
02 {
03   $_SERVER['ALL_HTTP'] = isset($_SERVER['ALL_HTTP']) ?$_SERVER['ALL_HTTP'] : '';
04   $mobile_browser = '0';
05   if(preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i',strtolower($_SERVER['HTTP_USER_AGENT'])))
06     $mobile_browser++;
07   if((isset($_SERVER['HTTP_ACCEPT'])) and(strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml') !== false))
08     $mobile_browser++;
09   if(isset($_SERVER['HTTP_X_WAP_PROFILE']))
10     $mobile_browser++;
11   if(isset($_SERVER['HTTP_PROFILE']))
12     $mobile_browser++;
13   $mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'],0,4));
14   $mobile_agents = array(
15         'w3c ','acs-','alav','alca','amoi','audi','avan','benq','bird','blac',
16         'blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno',
17         'ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-',
18         'maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-',
19         'newt','noki','oper','palm','pana','pant','phil','play','port','prox',
20         'qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar',
21         'sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-',
22         'tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp',
23         'wapr','webc','winw','winw','xda','xda-'
24         );
25   if(in_array($mobile_ua, $mobile_agents))
26     $mobile_browser++;
27   if(strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false)
28     $mobile_browser++;
29   // Pre-final check to reset everything if the user is on Windows
30   if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') !== false)
31     $mobile_browser=0;
32   // But WP7 is also Windows, with a slightly different characteristic
33   if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows phone') !== false)
34     $mobile_browser++;
35   if($mobile_browser>0)
36     return true;
37   else
38     return false;
39 }