Explode each values of Array element

Question

I have an array like :

Array
(
   [2] => 2,6
   [3] => 1
   [4] => 14
   [5] => 10
   [6] => 8
)

I want to explode each element of an array and return a new array using array_map, so that I can avoid using loop, and creating extra function to call back.

O/p should be like :

  Array
(
[2] => Array
    (
        [0] => 2
        [1] => 6
    )

[3] => Array
    (
        [0] => 1
    )

[4] => Array
    (
        [0] => 14
    )

[5] => Array
    (
        [0] => 10
    )

[6] => Array
    (
        [0] => 8
    )

)

So where are you stuck with using `array_map()`? Also you know that at the end `array_map` will also loop over your array. — Rizier123, Aug 29 '16 at 10:17
*avoid using loop, and creating extra function to call back* - `array_map` also uses callback function as its first argument — RomanPerekhrest, Aug 29 '16 at 10:19
avoid using loop, and creating extra function to call back - Means , as we have function explode already , so not to create other function — Alok Jha, Aug 29 '16 at 10:48

Philipp Palmtag · Accepted Answer · 2016-08-29T10:32:58.200

You can use

$result = array_map(function($val) {
    return explode(',', $val);
}, $input);

Which will result in

Array
(
    [2] => Array
        (
            [0] => 2
            [1] => 6
        )

    [3] => Array
        (
            [0] => 1
        )

    [4] => Array
        (
            [0] => 14
        )

    [5] => Array
        (
            [0] => 10
        )

    [6] => Array
        (
            [0] => 8
        )

)

This will work on PHP >= 5.3 with support for anonymous functions.

score 4 · Answer 2 · answered Sep 17 '19 at 07:34

You can also do

$result = array_map('str_getcsv', $input);

This will also result in

Array
(
    [2] => Array
        (
            [0] => 2
            [1] => 6
        )

    [3] => Array
        (
            [0] => 1
        )

    [4] => Array
        (
            [0] => 14
        )

    [5] => Array
        (
            [0] => 10
        )

    [6] => Array
        (
            [0] => 8
        )

)

score 2 · Answer 3 · answered Aug 29 '16 at 10:24

2

Try following code

$newArr = array_map(function($val, $key){
    return explode(",", $val);
}, $arr);

answered Aug 29 '16 at 10:24

Mohit Tanwani

6,608
2
14
32

score 0 · Answer 4 · edited Aug 29 '16 at 11:38

0

$data = array(2 => '2,6',3 => '1',4 => '14',5 => '10',6 => '8');

foreach($data as $key => $val) {
    $new = explode(',',$val);
    $data[$key] = $new;
}
$output = $data;

echo '<pre>';
print_r($output);

edited Aug 29 '16 at 11:38

Philipp Palmtag

1,310
2
16
18

answered Aug 29 '16 at 10:27

Dilip Kale

71
7

I dont want any extra loops, as we have array_map – Alok Jha Aug 29 '16 at 10:29
While this code snippet may solve the question, [including an explanation](//meta.stackexchange.com/questions/114762/explaining-entirely-code-based-answers) really helps to improve the quality of your post. Remember that you are answering the question for readers in the future, and those people might not know the reasons for your code suggestion. Please also try not to crowd your code with explanatory comments, as this reduces the readability of both the code and the explanations! – Blue Aug 29 '16 at 19:41

Explode each values of Array element

4 Answers4