如何将一维数组转换为嵌套<li>？

Question

How to convert a single dimension array into multi dimensional array or into a nested <li> HTML.

Below is the array which I need in nested <li> based on parent_id

Array (
[5] => Array
    (
        [data_id] => 5
        [data_parent] => 4
        [data_level] => 
        [data_prefix] => 
        [data_title] => Assets
        [data_link] => 0
    )

[57] => Array
    (
        [data_id] => 57
        [data_parent] => 5
        [data_level] => 
        [data_prefix] => 
        [data_title] => Fixed Assets
        [data_link] => 0
    )

[52] => Array
    (
        [data_id] => 52
        [data_parent] => 5
        [data_level] => 
        [data_prefix] => 
        [data_title] => Asset Two
        [data_link] => 1
    )

[51] => Array
    (
        [data_id] => 51
        [data_parent] => 5
        [data_level] => 
        [data_prefix] => 
        [data_title] => Assset ONE
        [data_link] => 1
    )

[48] => Array
    (
        [data_id] => 48
        [data_parent] => 4
        [data_level] => 
        [data_prefix] => 
        [data_title] => Expenses
        [data_link] => 0
    )

[50] => Array
    (
        [data_id] => 50
        [data_parent] => 48
        [data_level] => 
        [data_prefix] => 
        [data_title] => Expense One
        [data_link] => 1
    )

[49] => Array
    (
        [data_id] => 49
        [data_parent] => 48
        [data_level] => 
        [data_prefix] => 
        [data_title] => Expense One
        [data_link] => 1
    )

[58] => Array
    (
        [data_id] => 58
        [data_parent] => 57
        [data_level] => 
        [data_prefix] => 
        [data_title] => Vehicles
        [data_link] => 1
    )

)

Answer 1

you can create multi dimensional array use foreach and sort

$newArray = [];

foreach($array as $value) {
    $newArray[$value['data_parent']][] = $value;
}

var_dump($newArray);