PHP识别电脑或手机访问网站

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www.phpzu.com';
else
echo '电脑登录www.phpzu.com';

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