reduce_tree()

Reduce the results of a hierarchy tree array to a non-multidimensional single output value while preserving keys.

reduce_tree( array $result, string $id_col ) : array

Parameters

$result (array) (Required) Results from dbquery_tree_full() or dbquery_tree().

$id_col (string) (Required) ID column.

Return Values

(array)

Examples

$result = dbquery_tree_full(DB_NEWS_CATS, 'news_cat_id', 'news_cat_parent');
$tree = reduce_tree($result, 'news_cat_id');
/*
Array
(
    [1] => Array
        (
            [news_cat_id] => 1
            [news_cat_parent] => 0
            [news_cat_name] => Bugs
            [news_cat_image] => bugs.svg
            [news_cat_visibility] => 0
            [news_cat_draft] => 0
            [news_cat_sticky] => 0
            [news_cat_language] => English
        )
    ....
)
*/