class Twitter {
 /**
 * Method to make twitter api call for the users timeline in XML
 *
 * @access private
 * @param $twitter_id, $num_of_tweets
 * @return $xml
 */
 private function api_call($twitter_id, $num_of_tweets) {
 $c = curl_init();
 curl_setopt($c, CURLOPT_URL, "http://twitter.com/statuses/user_timeline/$twitter_id.xml?count=$num_of_tweets");
 curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($c, CURLOPT_CONNECTTIMEOUT, 3);
 curl_setopt($c, CURLOPT_TIMEOUT, 5);
 $response = curl_exec($c);
 $response_info = curl_getinfo($c);
 curl_close($c);
 if (intval($response_info['http_code']) == 200) {
  $xml = new SimpleXMLElement($response);
  return $xml;
 } else {
  return false;
 }
 }
 /**
 * Method to add hyperlink html tags to any urls, twitter ids or hashtags in tweet
 *
 * @access private
 * @param $text
 * @return $text
 */
 private function process_links($text) {
 $text = utf8_decode($text);
 $text = preg_replace('@(https?://([-\w\.]+)+(d+)?(/([\w/_\.]*(\?\S+)?)?)?)@', '<a href="$1">$1</a>', $text);
 $text = preg_replace("#(^|[\n ])@([^ \"\t\n\r<]*)#ise", "'\\1<a href=\"http://www.twitter.com/\\2\" >@\\2</a>'", $text);
 $text = preg_replace("#(^|[\n ])\#([^ \"\t\n\r<]*)#ise", "'\\1<a href=\"http://hashtags.org/search?query=\\2\" >#\\2</a>'", $text);
 return $text;
 }
 /**
 * Main method to retrieve the tweets and return html for display
 *
 * @access public
 * @param $twitter_id, $num_of_tweets, $timezone
 * @return $result
 */
 public function get_tweets($twitter_id, $num_of_tweets = 3, $timezone = "America/Denver") {
 $include_replies = false;
 date_default_timezone_set($timezone);
 // the html markup
 $cont_o = "<div id=\"tweets\">\n";
 $tweet_o = "<div class=\"status\">\n";
 $tweet_c = "</div>\n\n";
 $detail_o = "<div class=\"details\">\n";
 $detail_c = "</div>\n\n";
 $cont_c = "</div>\n";
 if ($twitter_xml = $this->api_call($twitter_id, $num_of_tweets)) {
  $result = $cont_o;
  foreach ($twitter_xml->status as $key => $status) {
  if ($include_replies == true | substr_count($status->text, "@") == 0 | strpos($status->text, "@") != 0) {
   $tweet = $this->process_links($status->text);
   $result .= $tweet_o . $tweet . $tweet_c . $detail_o . date('D jS M y H:i', strtotime($status->created_at)) . $detail_c;
  }
  }
  $result .= $cont_c;
 } else {
  $result .= $cont_o . $tweet_o . "Twitter seems to be unavailable at the moment." . $tweet_c . $cont_c;
 }
 return $result;
 }
}