public static function getCategoryFilters($cat_id = 0)
 {
     $categories = ModCitybrandingfiltersHelper::getCategories();
     $filters = ModCitybrandingfiltersHelper::createFiltersAsArray($categories);
     return array_filter($filters);
 }
<?php

/**
 * @version     1.0.0
 * @package     com_citybranding
 * @subpackage  mod_citybranding
 * @copyright   Copyright (C) 2015. All rights reserved.
 * @license     GNU AFFERO GENERAL PUBLIC LICENSE Version 3; see LICENSE
 * @author      Ioannis Tsampoulatidis <*****@*****.**> - https://github.com/itsam
 */
defined('_JEXEC') or die;
?>

<?php 
$category_filters = ModCitybrandingfiltersHelper::getCategoryFilters();
foreach ($category_filters as $filter) {
    echo $filter;
}
?>

<button class="btn btn-primary"><?php 
echo JText::_('Apply');
?>
</button>
?>
					  </div>
					</div>
					<hr />

					<h4>
						<input type="checkbox" checked="checked" id="selectAllSteps">
						<?php 
echo JText::_('MOD_CITYBRANDINGFILTERS_POI_STATUSES');
?>
					</h4>
					<div class="container-fluid">
						<div class="row">
						  	<div class="col-md-12">
							<?php 
$statuses = ModCitybrandingfiltersHelper::createStatuses();
echo $statuses;
?>
							</div>
						</div>
					</div>					
				</div>
				<div class="modal-footer">
					<button id="cancel_filters" class="btn btn-default" data-dismiss="modal" aria-hidden="true"><?php 
echo JText::_('JCANCEL');
?>
</button>
					<button type="submit" id="apply_filters" class="btn btn-success"><?php 
echo JText::_('MOD_CITYBRANDINGFILTERS_APPLY');
?>
</button>