<?php 

  $tablet_browser = 0;
  $mobile_browser = 0;
  $body_class = 'desktop';
   if (preg_match('/(tablet|ipad|playbook)|(android(?!.*(mobi|opera mini)))/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
     $tablet_browser++;
     $body_class = 'tablet';
   }
   if (preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|android|iemobile)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
     $mobile_browser++;
     $body_class = 'mobile';
   }
   if ((strpos(strtolower($_SERVER['HTTP_ACCEPT']),'application/vnd.wap.xhtml+xml') > 0) or ((isset($_SERVER['HTTP_X_WAP_PROFILE']) or isset($_SERVER['HTTP_PROFILE'])))) {
     $mobile_browser++;
     $body_class = 'mobile';
  }
  $mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'], 0, 4));
  $mobile_agents = array(
  'w3c ','acs-','alav','alca','amoi','audi','avan','benq','bird','blac',
   'blaz','brew','cell','cldc','cmd-','dang','doco','eric','hipt','inno',
  'ipaq','java','jigs','kddi','keji','leno','lg-c','lg-d','lg-g','lge-',
  'maui','maxo','midp','mits','mmef','mobi','mot-','moto','mwbp','nec-',
  'newt','noki','palm','pana','pant','phil','play','port','prox',
  'qwap','sage','sams','sany','sch-','sec-','send','seri','sgh-','shar',
  'sie-','siem','smal','smar','sony','sph-','symb','t-mo','teli','tim-',
  'tosh','tsm-','upg1','upsi','vk-v','voda','wap-','wapa','wapi','wapp',
  'wapr','webc','winw','winw','xda ','xda-');
   if (in_array($mobile_ua,$mobile_agents)) {
     $mobile_browser++;
  }
   if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'opera mini') > 0) {
     $mobile_browser++;
     //Check for tablets on opera mini alternative headers
     $stock_ua = strtolower(isset($_SERVER['HTTP_X_OPERAMINI_PHONE_UA'])?$_SERVER['HTTP_X_OPERAMINI_PHONE_UA']:(isset($_SERVER['HTTP_DEVICE_STOCK_UA'])?$_SERVER['HTTP_DEVICE_STOCK_UA']:''));
     if (preg_match('/(tablet|ipad|playbook)|(android(?!.*mobile))/i', $stock_ua)) {
       $tablet_browser++;
     }
   }
   if ($tablet_browser > 0) {
     // Si es tablet has lo que necesites
     $device='tablet';
   }
   else if ($mobile_browser > 0) {
     // Si es dispositivo mobil has lo que necesites
     $device='celular';
   }else {
     // Si es ordenador de escritorio has lo que necesites
     $device='pc';
   }
?>