Append one array values as key value pair to another array php

Question

I have two arrays both guaranteed to be the same length. The two arrays are of the following structures

array1

Array
(
    [0] => Array
        (
            [id] => 841052
            [store] => 11
            [position] => 1
        )

    [1] => Array
        (
            [id] => 1613197
            [store] => 11
            [position] => 401
        )

    [2] => Array
        (
            [id] => 1648966
            [store] => 11
            [position] => 1
        )

    [3] => Array
        (
            [id] => 1656857
            [store] => 11
            [position] => 1
        )
....
....
)

array2

Array

(
    [0] => 5/20/2019
    [1] => 7/7/2019
    [2] => 12/16/2018
    ...
    ...
)

How do I append every value of array2 as a key value pair to array1 to get the following array. The key name can be whatever I just chose date.

Array
(
    [0] => Array
        (
            [id] => 841052
            [store] => 11
            [position] => 1
            [date] => 5/20/2019
        )

    [1] => Array
        (
            [id] => 1613197
            [store] => 11
            [position] => 401
            [date] => 7/7/2019
        )

    [2] => Array
        (
            [id] => 1648966
            [store] => 11
            [position] => 1
            [date] => 12/16/2018
        )
)
...
...
...

I have tried

array_push($array1, $array2);

It just pushed it to the last element of the array. I thought of using two foreach loops but couldn't get ti to work. Is there a built in php function that will do this, or do I have to do it in loops.

AbraCadaver · Accepted Answer · 2019-08-28 15:58:01Z

3

Just walk $array1 and modify each sub-array by adding the new key and the value of $array2 with the same key:

array_walk($array1, function(&$v, $k) use($array2) { $v['date'] = $array2[$k]; });

edited Aug 28, 2019 at 15:58

answered Aug 28, 2019 at 15:39

AbraCadaver

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4 Comments

ees3 Over a year ago

getting a array_map() expects parameter 1 to be a valid callback, array must have exactly two members error. Using PHP 5.3.3 if that matters

AbraCadaver Over a year ago

Damn, I started with map but it should be array_walk.

Manzolo Over a year ago

@AbraCadaver This answer is better than mine. Only doubt, if it does not correspond the number of elements could give error.

Manzolo Over a year ago

@ees3 This is better for you!

Manzolo · Accepted Answer · 2019-08-28 15:50:20Z

2

try this:

    $array1 = array(array("id" => 841052, "store" => "11", "position" => "1"), array("id" => 1613197, "store" => "11", "position" => "401"),);
    $array2 = array("5/20/2019", "7/7/2019");
    foreach ($array1 as $index => $valuearray1) {
        if (array_key_exists($index, $array2)) {
            $array1[$index]["date"] = $array2[$index];
        }
    }
    var_dump($array1);

answered Aug 28, 2019 at 15:50

Manzolo

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1 Comment

ND_Coder Over a year ago

What is the purpose of $valuearray1 in this example?

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