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：
$agent=check_wap();
if($agent)
{
header('Location:http://www.nowamagic.net');
exit;
}
//checkifwap
functioncheck_wap(){
//先检查是否为wap代理，准确度高
if(stristr($_SERVER['HTTP_VIA'],"wap")){
returntrue;
}
//检查浏览器是否接受WML.
elseif(strpos(strtoupper($_SERVER['HTTP_ACCEPT']),"VND.WAP.WML")>0){
returntrue;
}
//检查USER_AGENT
elseif(preg_match('/(blackberry|configuration\/cldc|hp|hp-|htc|htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|operamini|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|windowsce|xda|xda_)/i',$_SERVER['HTTP_USER_AGENT'])){
returntrue;
}
else{
returnfalse;
}
}
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：
functionis_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)
$mobile_browser++;
//Pre-finalchecktoreseteverythingiftheuserisonWindows
if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'windows')!==false)
$mobile_browser=0;
//ButWP7isalsoWindows,withaslightlydifferentcharacteristic
if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'windowsphone')!==false)
$mobile_browser++;
if($mobile_browser>0)
returntrue;
else
returnfalse;
}
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。