/**
* Looks up all child categories for category with $id,
* appends them to $ids array and recursively looks up
* their children, too.
*/
public static function getChildrenCategoryIds($id, $ids)
{
jimport('joomla.application.categories');
$children = JCategories::getInstance('Content')->get($id)->getChildren();
for ($i = 0; $i < count($children); $i++) {
// Append to array.
$ids[count($ids)] = $children[$i]->get('id');
// Recursively add their children, too.
$ids = modNavSliderHelper::getChildrenCategoryIds($ids[count($ids) - 1], $ids);
}
return $ids;
}
