PHP recursive and cluster multi dimentional nested array
Array
(
[0] => Array
(
[id] => 1
[name] => Menu Item 1
[parent_id] => 0
)
[1] => Array
(
[id] => 2
[name] => Menu Item 2
[parent_id] => 0
)
[2] => Array
(
[id] => 3
[name] => Menu Item 3
[parent_id] => 0
)
[3] => Array
(
[id] => 4
[name] => Menu Item 1.1
[parent_id] => 1
)
[4] => Array
(
[id] => 11
[name] => Menu Item 1.2
[parent_id] => 1
)
[5] => Array
(
[id] => 5
[name] => Menu Item 2.1
[parent_id] => 2
)
[6] => Array
(
[id] => 6
[name] => Menu Item 3.1
[parent_id] => 3
)
[7] => Array
(
[id] => 12
[name] => Menu Item 3.2
[parent_id] => 3
)
[8] => Array
(
[id] => 7
[name] => Menu Item 1.1.1
[parent_id] => 4
)
[9] => Array
(
[id] => 9
[name] => Menu Item 2.1.1
[parent_id] => 5
)
[10] => Array
(
[id] => 8
[name] => Menu Item 1.1.1.1
[parent_id] => 7
)
[11] => Array
(
[id] => 10
[name] => Menu Item 1.1.1.1.1
[parent_id] => 8
)
[12] => Array
(
[id] => 14
[name] => Menu Item 2.1.1.1
[parent_id] => 9
)
[13] => Array
(
[id] => 13
[name] => Menu Item 2.1.1.2
[parent_id] => 9
)
)$cluster= new ClusterArray();
print_r($cluster->cluster($elements));Array
(
[0] => Array
(
[id] => 1
[name] => Menu Item 1
[parent_id] => 0
[lft] => 1
[rgt] => 12
[depht] => 0
[children] => Array
(
[0] => Array
(
[id] => 4
[name] => Menu Item 1.1
[parent_id] => 1
[lft] => 2
[rgt] => 9
[depht] => 1
[children] => Array
(
[0] => Array
(
[id] => 7
[name] => Menu Item 1.1.1
[parent_id] => 4
[lft] => 3
[rgt] => 8
[depht] => 2
[children] => Array
(
[0] => Array
(
[id] => 8
[name] => Menu Item 1.1.1.1
[parent_id] => 7
[lft] => 4
[rgt] => 7
[depht] => 3
[children] => Array
(
[0] => Array
(
[id] => 10
[name] => Menu Item 1.1.1.1.1
[parent_id] => 8
[lft] => 5
[rgt] => 6
[depht] => 4
)
)
)
)
)
)
)
[1] => Array
(
[id] => 11
[name] => Menu Item 1.2
[parent_id] => 1
[lft] => 10
[rgt] => 11
[depht] => 1
)
)
)
[1] => Array
(
[id] => 2
[name] => Menu Item 2
[parent_id] => 0
[lft] => 13
[rgt] => 22
[depht] => 0
[children] => Array
(
[0] => Array
(
[id] => 5
[name] => Menu Item 2.1
[parent_id] => 2
[lft] => 14
[rgt] => 21
[depht] => 1
[children] => Array
(
[0] => Array
(
[id] => 9
[name] => Menu Item 2.1.1
[parent_id] => 5
[lft] => 15
[rgt] => 20
[depht] => 2
[children] => Array
(
[0] => Array
(
[id] => 14
[name] => Menu Item 2.1.1.1
[parent_id] => 9
[lft] => 16
[rgt] => 17
[depht] => 3
)
[1] => Array
(
[id] => 13
[name] => Menu Item 2.1.1.2
[parent_id] => 9
[lft] => 18
[rgt] => 19
[depht] => 3
)
)
)
)
)
)
)
[2] => Array
(
[id] => 3
[name] => Menu Item 3
[parent_id] => 0
[lft] => 23
[rgt] => 28
[depht] => 0
[children] => Array
(
[0] => Array
(
[id] => 6
[name] => Menu Item 3.1
[parent_id] => 3
[lft] => 24
[rgt] => 25
[depht] => 1
)
[1] => Array
(
[id] => 12
[name] => Menu Item 3.2
[parent_id] => 3
[lft] => 26
[rgt] => 27
[depht] => 1
)
)
)
)You can save lft,rgt and depth to database so you can easily access child rows with one sql and also you can adjust max and min depth.
select `id`, `name`, `parent_id`, `lft`, `rgt`, `depth` from `table` where `lft` >= ? and `lft` <= ? and `depth` < ? order by `lft` ascArray
(
[0] => Array
(
[id] => 4
[name] => Menu Item 1.1
[parent_id] => 1
[lft] => 1
[rgt] => 6
[depth] => 0
[children] => Array
(
[0] => Array
(
[id] => 7
[name] => Menu Item 1.1.1
[parent_id] => 4
[lft] => 2
[rgt] => 5
[depth] => 1
[children] => Array
(
[0] => Array
(
[id] => 8
[name] => Menu Item 1.1.1.1
[parent_id] => 7
[lft] => 3
[rgt] => 4
[depth] => 2
)
)
)
)
)
[1] => Array
(
[id] => 11
[name] => Menu Item 1.2
[parent_id] => 1
[lft] => 7
[rgt] => 8
[depth] => 0
)
)