<div class="wrap">
  <div class="icon32" id="icon-options-general"><br></div>
  <h2><?php 
_e('Last track settings', LastTrackPlugin::domain());
?>
</h2>
  <p></p>
  <form action="options.php" method="post">
    <?php 
settings_fields(LastTrackPlugin::PREFIX);
?>
    <?php 
do_settings_sections(LastTrackPlugin::get_name_with_prefix('options'));
?>
    <?php 
submit_button();
?>
  </form>
</div>
<?php 
wp_enqueue_script("jquery");
wp_enqueue_script(LastTrackPlugin::get_name_with_prefix('options_js'), plugins_url('js/options.js', __FILE__), array('jquery'));
 public function get_last_songs($count = 0)
 {
     $songs = array();
     $curl = curl_init($this->url);
     if (!$curl) {
         $songs['errors'][] = __('Cannot init curl.', LastTrackPlugin::domain());
         return $songs;
     }
     $options = array(CURLOPT_HEADER => false, CURLOPT_RETURNTRANSFER => true, CURLOPT_CONNECTTIMEOUT => $this->connect_timeout, CURLOPT_TIMEOUT => $this->timeout);
     if ($this->is_require_auth) {
         $options[CURLOPT_HTTPAUTH] = CURLAUTH_ANY;
         $options[CURLOPT_USERPWD] = $this->login . ':' . $this->password;
     }
     $wrong_key = $this->set_options($curl, $options);
     if (isset($wrong_key)) {
         $songs['errors'][] = printf(__("Cannot set option '%s': %s", LastTrackPlugin::domain()), curl_error($curl));
         curl_close($curl);
         return $songs;
     }
     $xml = curl_exec($curl);
     if (!isset($xml)) {
         $songs['errors'][] = printf(__("Cannot exec curl: %s", LastTrackPlugin::domain()), curl_error($curl));
         curl_close($curl);
         return $songs;
     }
     $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
     switch ($status) {
         case 401:
             $songs['errors'][] = __('Unauthorized.', LastTrackPlugin::domain());
             curl_close($curl);
             return $songs;
         case 200:
             break;
         default:
             $songs['errors'][] = $xml;
             curl_close($curl);
             return $songs;
     }
     $data = new SimpleXMLElement($xml);
     $counter = 0;
     foreach ($data->SONGHISTORY->SONG as $song) {
         $title = strval($song->TITLE);
         $is_exclude = false;
         foreach ($this->exclude as $test) {
             if (strpos(mb_strtoupper($title), mb_strtoupper($test)) !== false) {
                 $is_exclude = true;
                 break;
             }
         }
         if ($is_exclude) {
             continue;
         }
         if ($counter == 0) {
             $songs['current'] = $this->parse_title($title);
             ++$counter;
             continue;
         }
         $songs['lasts'][] = $this->parse_title($title);
         if ($count > 0 && $count == $counter) {
             break;
         }
         ++$counter;
     }
     return $songs;
 }
 public static function ajax()
 {
     $ajax = array('title' => LastTrackPlugin::get_option('title'), 'content' => LastTrackWidget::get_template());
     exit(json_encode($ajax));
 }
<?php

/*
Plugin Name: Last Track Shoutcast
Plugin URI: https://github.com/rodnover55/last_tracks_shoutcast
Description: Show last track from shoutcast
Version: 1.0.0
Author: rodnover
Author URI: 
License: GPL
*/
include_once 'last_track_plugin.php';
LastTrackPlugin::activate();
 public static function get_option($option_name)
 {
     return get_option(LastTrackPlugin::get_name_with_prefix($option_name), LastTrackPlugin::$options[LastTrackPlugin::get_name_with_prefix($option_name)]);
 }
<div>
<?php 
include_once "text_with_link.php";
if (isset($songs['errors'])) {
    switch ($information) {
        case LastTrackPlugin::INFORMATION_MESSAGE:
            echo $information_message;
            break;
        case LastTrackPlugin::INFORMATION_FULL:
            foreach ($songs['errors'] as $error) {
                ?>
            <?php 
                _e('Errors:', LastTrackPlugin::domain());
                echo $error;
                ?>
<br/><?php 
            }
            break;
    }
    return;
} else {
    ?>
        <div>
          <div class="current_song_title"><?php 
    echo $current_song;
    ?>
</div>
            <?php 
    text_with_link($href, "<div class='current_song_artist'>{$songs['current']['artist']}</div>" . "<div class='current_song_track'>{$songs['current']['track']}</div>");
    ?>
<br/>
 public static function admin_menu()
 {
     add_options_page(__('Last track shoutcast settings', LastTrackPlugin::domain()), __('Last tracks shoutcast', LastTrackPlugin::domain()), 'manage_options', LastTrackPlugin::PREFIX, array(__CLASS__, 'get_options'));
 }