public function get_custom_taxonomy($custom_taxonomy_id){
    global $wpdb;

    $query = sprintf('SELECT * FROM %s WHERE id = %s',MF_TABLE_CUSTOM_TAXONOMY,$custom_taxonomy_id);
    $custom_taxonomy = $wpdb->get_row( $query, ARRAY_A );
    if($custom_taxonomy){
      $custom_taxonomy = unserialize($custom_taxonomy['arguments']);
      $custom_taxonomy['core']['id'] = $custom_taxonomy_id;
      return $custom_taxonomy;
    }
    return false;
  }