modx snippet finalParent

finalParent.snippet.php

<?php
if (!isset($modx)) return '';

if (!function_exists('getParentIds'))
{
    
    function getParentIds($id = 0, $depth = 9, $finalWhere = array('parent' => 0), $alias = 'modResource')
    {
        global $modx;
        
        $ids = array();
        
        $curRes = $modx->getObject($alias, $id);
        $parent = $curRes->parent;
        
        if (
            $parent
            && $parent > 0 
            && $depth > 0
            && !$modx->getCount($alias, array_merge(array('id' => $id), $finalWhere))
        )
        {
            $ids[] = $parent;
            $ids = array_merge($ids, getParentIds($parent, $depth--, $finalWhere, $alias));
        }
        
        return $ids;
    }
}

$id = $modx->getOption('id', $scriptProperties, $modx->resource->id);
$depth = $modx->getOption('depth', $scriptProperties, 9);
$finalWhere = $modx->getOption('finalWhere', $scriptProperties, array('parent' => 0));

if (!is_array($where))
{
    $where = json_decode($where, true);
}

$ids = getParentIds($id, $depth, $finalWhere);

if (!count($ids))
{
    return 0;
}

return $ids[count($ids) - 1];