php判断手机访问还是电脑访问示例分享

<?php
function isMobile(){ 
 $useragent=isset($_SERVER[HTTP_USER_AGENT]) ? $_SERVER[HTTP_USER_AGENT] : ; 
 $useragent_commentsblock=preg_match(|\(.*?\)|,$useragent,$matches)>0?$matches[0]:;    
 function CheckSubstrs($substrs,$text){ 
  foreach($substrs as $substr) 
   if(false!==strpos($text,$substr)){ 
    return true; 
   } 
   return false; 
 }
 $mobile_os_list=array(Google Wireless Transcoder,Windows CE,WindowsCE,Symbian,Android,armv6l,armv5,Mobile,CentOS,mowser,AvantGo,Opera Mobi,J2ME/MIDP,Smartphone,Go.Web,Palm,iPAQ);
 $mobile_token_list=array(Profile/MIDP,Configuration/CLDC-,160×160,176×220,240×240,240×320,320×240,UP.Browser,UP.Link,SymbianOS,PalmOS,PocketPC,SonyEricsson,Nokia,BlackBerry,Vodafone,BenQ,Novarra-Vision,Iris,NetFront,HTC_,Xda_,SAMSUNG-SGH,Wapaka,DoCoMo,iPhone,iPod); 

 $found_mobile=CheckSubstrs($mobile_os_list,$useragent_commentsblock) || 
     CheckSubstrs($mobile_token_list,$useragent); 

 if ($found_mobile){ 
  return true; 
 }else{ 
  return false; 
 } 
}
if (isMobile())
 echo 手机登录m.jb51.com;
else
 echo 电脑登录www.jb51.com;
?>