CODEWITHSUNDEEP
phparraysmultidimensional-array
Fadly Dzil
Fadly Dzil

Reputation: 2226

Change key in array based first element array multidimensional

How to change key of array into first element array ? I preferred using array_map.

Now I have a common array. If I have an array like this :

[
 0 => [
    'barang_id' => '7389'
    'spec' => 'KCH8AT-DM'
    'heat_no' => '7B4784'
    'coil_no' => '0210'
    'size' => '17.9'
    'weight' => '2014'
    'container' => 'TCLU6265556'
]
 1 => [
    'barang_id' => '7390'
    'spec' => 'KCH8AT-DM'
    'heat_no' => '7B4784'
    'coil_no' => '0050'
    'size' => '17.9'
    'weight' => '2006'
    'container' => 'TCLU6265556'
 ]
]

I need like this. The value of first element array is going to be key of array.

[
 7389 => [
    'barang_id' => '7389'
    'spec' => 'KCH8AT-DM'
    'heat_no' => '7B4784'
    'coil_no' => '0210'
    'size' => '17.9'
    'weight' => '2014'
    'container' => 'TCLU6265556'
]
 7390 => [
    'barang_id' => '7390'
    'spec' => 'KCH8AT-DM'
    'heat_no' => '7B4784'
    'coil_no' => '0050'
    'size' => '17.9'
    'weight' => '2006'
    'container' => 'TCLU6265556'
 ]
]

Please advise

Upvotes: 0

Views: 79

Answers (3)

HSLM
HSLM

Reputation: 2022

I thought with this solution using array_map

$a = [['id' => 1233, 'name' => 'test1'], ['id' => 1313, 'name' => 'test2'], ['id' => 13123, 'name' => 'test3']];

$result = [];
array_map(
    function ($item, $key) use (&$result) {
        $result[$item['id']] = $item;
        return $item; // you can ignore this
    }, $a, array_keys($a)
);

now result contains what you want, check this image:

enter image description here

Or you could use it like this (without the $result thing) but you should unset the old key, look at the image: enter image description here

Upvotes: 2

Gordon
Gordon

Reputation: 317197

You cannot use array_map, because array_map will not pass the keys to the callback. But array_walk would work:

$reindexed = [];
array_walk($data, function($v, $k) use (&$reindexed) {
    $reindexed[$v['barang_id']] = $v;
});

This has no advantage over a plain old foreach though.

Upvotes: 1

madalinivascu
madalinivascu

Reputation: 32354

if you have only 2 values you can create a new array:

$newarray[7389] = $oldarray[0];
$newarray[7390] = $oldarray[1];

or if you have multiple values you can do:

$newarray =[];
foreach($oldarray as $value) {
$newarray[$value['barang_id']] = $value

}

demo:https://ideone.com/mm2T7T

Upvotes: 1

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