PHP 实现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：

复制代码 代码如下:$agent = check_wap();if( $agent ){  header("Location: http://www.nowamagic.net");  exit;}// check if wapfunction check_wap(){  // 先检查是否为wap代理，准确度高  if(stristr($_SERVER["HTTP_VIA"],"wap")){      return true;  }  // 检查浏览器是否接受 WML.  elseif(strpos(strtoupper($_SERVER["HTTP_ACCEPT"]),"VND.WAP.WML") > 0){      return true; } //检查USER_AGENT 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"])){      return true;             }  else{      return false;   }}

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：

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;  }

代码很简单，功能很实用，非常适合将其放入项目中，希望小伙伴们能够喜欢。