public function get_clubs_information()
 {
     $db = new PHPLeague_Database();
     $clubs = $db->get_every_club(0, 999);
     $output = '<table id="phpleague">';
     $output .= '<thead><tr><th>' . __('Club', 'phpleague') . '</th><th>' . __('Coach: ', 'phpleague') . '</th><th>' . __('Venue', 'phpleague') . '</th></tr><thead>';
     $output .= '<tbody>';
     foreach ($clubs as $club) {
         $info = $db->get_club_information($club->id);
         $output .= '<tr><td colspan="3"><hr /></td></tr>';
         $output .= '<tr><td>' . esc_html($info->name) . '</td><td>' . esc_html($info->coach) . '</td><td>' . esc_html($info->venue) . '</td></tr>';
         $output .= '<tr><td></td><td>' . esc_html($info->address) . '</td><td>' . esc_html($info->training_time) . '</td></tr>';
     }
     $output .= '</tbody></table>';
     return $output;
 }