I want to convert this array in a single dimensional flat array without losing the sort order.
Array
(
[0] => Array
(
[id] => 1
[title] => Computer
[parent_id] => 0
[children] => Array
(
[0] => Array
(
[id] => 4
[title] => keyboard
[parent_id] => 1
[children] => Array
(
[0] => Array
(
[id] => 6
[title] => Mouse
[parent_id] => 4
[children] => Array
(
[0] => Array
(
[id] => 7
[title] => webcam
[parent_id] => 6
)
)
)
)
)
)
)
[1] => Array
(
[id] => 43
[title] => Mobile
[parent_id] => 0
[children] => Array
(
[0] => Array
(
[id] => 5
[title] => bar phones
[parent_id] => 43
)
[1] => Array
(
[id] => 47
[title] => Touchscreen
[parent_id] => 43
[children] => Array
(
[0] => Array
(
[id] => 41
[title] => Samsung
[parent_id] => 47
)
[1] => Array
(
[id] => 44
[title] => Micromax
[parent_id] => 47
)
[2] => Array
(
[id] => 45
[title] => Huawei
[parent_id] => 47
)
)
)
)
)
[2] => Array
(
[id] => 46
[title] => Camera
[parent_id] => 0
)
[3] => Array
(
[id] => 42
[title] => Heater
[parent_id] => 0
)
)