Convert flat array of delimited key path strings to a multidimensional array with each path terminating at an empty array

Question

I would like to convert these strings into a combined nested array:

array(
    'item1:item2:itemx',
    'item1:item2:itemy',
    'itemz'
)

To

array(
    'item1' => array(
        'item2' => array(
            'itemx' => array(),
            'itemy' => array(),
        )
    )
    'itemz' => array()
)

Is there a way to do this with explode/foreach loop?

Like in this post [stackoverflow.com/questions/25510551/… ? — Rihard S
– Rihard S, Commented Aug 27, 2014 at 20:11
I would prefer a solution with PHP, and using arrays not objects. — Joe
– Joe, Commented Aug 27, 2014 at 20:20
are your strings in an array or are really named $string1, 2 etc. ? — user1299518
– user1299518, Commented Aug 27, 2014 at 20:23
@vlzvl There are nested in a larger array, I didn't include that part for simplicity. I'll make a quick edit... — Joe
– Joe, Commented Aug 27, 2014 at 20:26

silkfire · Accepted Answer · 2014-08-27 20:27:12Z

12

This question has been answered countless of times... please use search before posting a new question.

Anyway, here's one solution:

$strings = array(
                 'item1:item2:itemx',
                 'item1:item2:itemy',
                 'itemz'
                );

$nested_array = array();

foreach($strings as $item) {
    $temp = &$nested_array;

    foreach(explode(':', $item) as $key) {
        $temp = &$temp[$key];
    }

    $temp = array();
}

var_dump($nested_array);

answered Aug 27, 2014 at 20:27

silkfire

26.2k17 gold badges92 silver badges116 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Joe Over a year ago

I did indeed search before posting. Thanks for your answer anyway.

TarranJones Over a year ago

There are similar questions yes but this one suited my needs exactly, thanks.

Collectives™ on Stack Overflow

Convert flat array of delimited key path strings to a multidimensional array with each path terminating at an empty array

1 Answer 1

2 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Linked

Related