Array ( [первая] => Array ( [3] => третья [4] => четвертая ) [вторая] => Array ( [пятая] => Array ( [7] => седьмая [8] => восьмая ) [6] => шестая ) )
Array ( [0] => Array ( [id] => 0 [name] => корневая [parent_id] => -1 ) [1] => Array ( [id] => 1 [name] => первая [parent_id] => 0 [3] => Array ( [id] => 3 [name] => третья [parent_id] => 1 ) [4] => Array ( [id] => 4 [name] => четвертая [parent_id] => 1 ) ) [2] => Array ( [id] => 2 [name] => вторая [parent_id] => 0 [5] => Array ( [id] => 5 [name] => пятая [parent_id] => 2 [7] => Array ( [id] => 7 [name] => седьмая [parent_id] => 5 ) [8] => Array ( [id] => 8 [name] => восьмая [parent_id] => 5 ) ) [6] => Array ( [id] => 6 [name] => шестая [parent_id] => 2 ) ) )