php网站判断用户是否是手机访问的方法

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：

$agent = check_wap（）;if（ $agent ）{header（"Location: http://www.jb51.net"）;exit;} // check if wap function check_wap（）{// 先检查是否为wap代理，准确度高if（stristr（$_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_AGENTelseif（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：（经过测试，很全面，推荐使用）

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;