/**
* Helper function that transforms a flat taxonomy tree in a nested array.
*/
public static function getNestedList($tree = array(), $max_depth = NULL, $parent = 0, $parents_index = array(), $depth = 0)
{
foreach ($tree as $term) {
foreach ($term->parents as $term_parent) {
if ($term_parent == $parent) {
$return[$term->id()] = $term;
} else {
$parents_index[$term_parent][$term->id()] = $term;
}
}
}
foreach ($return as &$term) {
if (isset($parents_index[$term->id()]) && (is_null($max_depth) || $depth < $max_depth)) {
$term->children = TaxonomyManagerTree::getNestedList($parents_index[$term->id()], $max_depth, $term->id(), $parents_index, $depth + 1);
}
}
return $return;
}
