<?php

  function is_mobile() {
    $useragents = array(
      'iPhone',          // iPhone
      'iPod',            // iPod touch
      'Android',         // 1.5+ Android
      'dream',           // Pre 1.5 Android
      'CUPCAKE',         // 1.5+ Android
      'blackberry9500',  // Storm
      'blackberry9530',  // Storm
      'blackberry9520',  // Storm v2
      'blackberry9550',  // Storm v2
      'blackberry9800',  // Torch
      'webOS',           // Palm Pre Experimental
      'incognito',       // Other iPhone browser
      'webmate'          // Other iPhone browser
    );
    $pattern = '/'.implode('|', $useragents).'/i';
    return preg_match($pattern, $_SERVER['HTTP_USER_AGENT']);
  }
  function is_ipad() {
    $is_ipad = (bool) strpos($_SERVER['HTTP_USER_AGENT'],'iPad');
    if ($is_ipad) {
        return true;
    } else {
        return false;
    }
  }
  function is_Kindle() {
    $is_Kindle = (bool) strpos($_SERVER['HTTP_USER_AGENT'],'Kindle');
    if ($is_Kindle) {
        return true;
    } else {
        return false;
    }
  }

?>