thinkphp如何来判断访客为手机端或是PC端

近日准备给自己的网站做一个小升级,让用户在手机二维码扫描的时候显示适合手机端来展示的模版【我用的是ThinkPHP3.0】,代码是参考别人的

我先说下大概的一个思路 简单两步:

统版本号和浏览器以及它的版本号（贴出的代码中数组中只有移动端信息，因此后面只需判断是否为数组中的某一个值即可）.

根据数组中的值来判断访客是否为手机、pad、之类的移动端，如果是的话就规定项目路径、名称为你的手机端模版如 define(&＃39;APP_NAME&＃39;,&＃39;mobi&＃39;);

define(&＃39;APP_PATH&＃39;,&＃39;./mobi/&＃39;);

下面代码的话我尽量加上注释:

1. //判断是否属手机 
2. //代码看上去很多，其实就是数组里面显得多而乱，不要被表面现象所吓倒哦！ 
3.  function is_mobile(){ 
4.     $user_agent = $_SERVER[&＃39;HTTP_USER_AGENT&＃39;]; 
5.  
6.     $mobile_agents = Array("240x320","acer","acoon","acs-","abacho","ahong","airness","alcatel","amoi","android","anywhereyougo.com","applewebkit/525","applewebkit/532","asus","audio","au-mic","avantogo","becker","benq","bilbo","bird","blackberry","blazer","bleu","cdm-","compal","coolpad","danger","dbtel","dopod","elaine","eric","etouch","fly ","fly_","fly-","go.web","goodaccess","gradiente","grundig","haier","hedy","hitachi","htc","huawei","hutchison","inno","ipad","ipaq","ipod","jbrowser","kddi","kgt","kwc","lenovo","lg ","lg2","lg3","lg4","lg5","lg7","lg8","lg9","lg-","lge-","lge9","longcos","maemo","mercator","meridian","micromax","midp","mini","mitsu","mmm","mmp","mobi","mot-","moto","nec-","netfront","newgen","nexian","nf-browser","nintendo","nitro","nokia","nook","novarra","obigo","palm","panasonic","pantech","philips","phone","pg-","playstation","pocket","pt-","qc-","qtek","rover","sagem","sama","samu","sanyo","samsung","sch-","scooter","sec-","sendo","sgh-","sharp","siemens","sie-","softbank","sony","spice","sprint","spv","symbian","tablet","talkabout","tcl-","teleca","telit","tianyu","tim-","toshiba","tsm","up.browser","utec","utstar","verykool","virgin","vk-","voda","voxtel","vx","wap","wellco","wig browser","wii","windows ce","wireless","xda","xde","zte"); 
7.     $is_mobile = false; 
8.     foreach ($mobile_agents as $device) {//这里把值遍历一遍，用于查找是否有上述字符串出现过 
9.        if (stristr($user_agent, $device)) { //stristr 查找访客端信息是否在上述数组中，不存在即为PC端。 
10.             $is_mobile = true; 
11.             break; 
12.         } 
13.     } 
14.     return $is_mobile; 
15. } 
16. define(&＃39;THINK_PATH&＃39;,&＃39;./CORE/&＃39;); 
17. if(is_mobile()){ //跳转至wap分组 
18.  echo &＃39;您是手机端访问的，已跳转到手机端&＃39;; 
19.      define(&＃39;APP_NAME&＃39;,&＃39;mobi&＃39;); 
20.     define(&＃39;APP_PATH&＃39;,&＃39;./mobi/&＃39;); 
21. }else{ 
22.  echo &＃39;你是PC端访问的&＃39;; 
23.      define(&＃39;APP_NAME&＃39;,&＃39;Home&＃39;); 
24.     define(&＃39;APP_PATH&＃39;,&＃39;./Home/&＃39;);          
25. } 
26.  define(&＃39;APP_DEBUG&＃39;, false); 
27. require THINK_PATH.&＃39;core.php&＃39;;