Convert array key from string to int of same value

Question

I have a a vaery large array which is parsed to my php script in json form. I would like to convert the keys from string to integer. The keys are serial numbers so i can't just use array_values. Currently i do it like this but would much prefer a solution that didn't involve a loop.

Example Array after json decode before int conversion:

array (
    '123' => 'my text',
    '223' => 'my text too',
    '183' => 'my text foo',
    '103' => 'my text doo',
    // more array items
);

Example Code:

$data = json_decode($_POST['json']);

$newArr = Array();
foreach ($data as $key => $val) {
    $ref = (int)$key;
    newArr[$ref] = $key; 
}

Are you sure they are just integers?

michelem
– michelem

2015-08-13 09:02:53 +00:00
Commented Aug 13, 2015 at 9:02 — michelem
– michelem, Commented Aug 13, 2015 at 9:02

mario.van.zadel · Accepted Answer · 2015-08-13 09:13:25Z

4

$arr = array (
    '123' => 'my text',
    '223' => 'my text too',
    '183' => 'my text foo',
    '103' => 'my text doo'
);

$newArray = array_combine(array_map('intval', array_keys($arr)), array_values($arr));

answered Aug 13, 2015 at 9:13

mario.van.zadel

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Comments

Enrique Muñoz Rodas · Accepted Answer · 2015-08-13 09:07:23Z

0

Try this!

$test = array (
    '123' => 'my text',
    '223' => 'my text too',
    '183' => 'my text foo',
    '103' => 'my text doo',
    // more array items
);

$newArr = array_combine(array_keys($test), array_keys($test));

:)

answered Aug 13, 2015 at 9:07

Enrique Muñoz Rodas

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Comments

SRV Media Support · Accepted Answer · 2017-03-27 12:41:02Z

0

If you have the source function via which the JSON encodes, just add
json_encode($data, JSON_NUMERIC_CHECK)

This will force the key fields in JSON to int (if int key field exist)

answered Mar 27, 2017 at 12:41

SRV Media Support

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