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
)
)
)