Filters function for Dibny theme

dibny_display_filters.php

<?php
/**
 * Returns a string detailing the parameters of a given query array.
 *
 * @param array A search array
 * @return string HTML
 */
function dibny_display_filters($query = null)
{
    $html = '';

    if ($query === null) {
        $query = Zend_Controller_Front::getInstance()->getRequest()->getParams();
    }

    if (!empty($query)) {
        $db = get_db();

        $displayList = '';
        $displayArray = array();

        foreach ($query as $key => $value) {
            $filter = $key;
            if($value != null) {
                $displayValue = null;
                switch ($key) {
                    case 'type':
                        $filter = 'Item Type';
                        $itemtype = $db->getTable('ItemType')->find($value);
                        $displayValue = $itemtype->name;
                    break;

                    case 'collection':
                        $collection = $db->getTable('Collection')->find($value);
                        $displayValue = $collection->name;
                    break;

                    case 'user':
                        $user = $db->getTable('User')->find($value);
                        $displayValue = $user->Entity->getName();
                    break;

                    case 'public':
                    case 'featured':
                        $displayValue = $value ? 'yes' : 'no';
                    break;

                    case 'search':
                    case 'tags':
                    case 'range':
                        $displayValue = $value;
                    break;
                }
                if ($displayValue) {
                    $displayArray[$filter] = $displayValue;
                }
            }
        }

        foreach($displayArray as $filter => $value) {
            $displayList .= '<li class="'.text_to_id($filter).'">'.ucwords($filter).': '.$value.'</li>';
        }

        if(array_key_exists('advanced', $query)) {
            $advancedArray = array();

            foreach ($query['advanced'] as $i => $row) {
                if (!$row['element_id'] || !$row['type']) {
                    continue;
                }
                $elementID = $row['element_id'];
                $elementDb = $db->getTable('Element')->find($elementID);
                $element = $elementDb->name;
                $type = $row['type'];
                $terms = $row['terms'];
                $advancedValue = $element . ' ' . $type;
                if ($terms) {
                    $advancedValue .= ' "' . $terms . '"';
                }
                $advancedArray[$i] = $advancedValue;
            }
            foreach($advancedArray as $advancedKey => $advancedValue) {
                $displayList .= '<li class="advanced">' . $advancedValue . '</li>';
            }
        } 

        if (!empty($displayList)) {
            $html = '<div class="filters">'
                  . '<ul id="filter-list">'
                  . $displayList
                  . '</ul>'
                  . '</div>';
        }
    }
    return $html;
}