John Davidson

Message:

I have the following code :

<?php

$arr1 = array();

$arr1[] = ['UUID' => '123a-123a', 'name' => 'A1'];

$arr1[] = ['UUID' => '123b-123b', 'name' => 'B1'];

$arr1[] = ['UUID' => '123c-123c', 'name' => 'C1'];



$arr2 = array();

$arr2[] = ['UUID' => '123a-123a', 'name' => 'A2'];

$arr2[] = ['UUID' => '123b-123b', 'name' => 'B2'];

$arr2[] = ['UUID' => '123c-123c', 'name' => 'C2'];







$new_arr1 = array();

foreach ($arr1 as $key => $value) {

    if(isset($new_arr1[$value['UUID']])){

        $new_arr1[$value['UUID']] += ['name_a' => $value['name']];

    }else{

        $new_arr1[$value['UUID']] = ['name_a' => $value['name']];

    }

    

}

$new_arr2 = array();

foreach ($arr2 as $key => $value) {

    if(isset($new_arr2[$value['UUID']])){

        $new_arr2[$value['UUID']] += ['name_1' => $value['name']];

    }else{

        $new_arr2[$value['UUID']] = ['name_2' => $value['name']];

    }

    

}

 $final_array = array_combine($new_arr1, $new_arr2);

var_dump($final_array);

Which give me the following error :

Warning: Array to string conversion in /home/user/scripts/code.php on line 32

Snippet :

https://sandbox.onlinephpfunctions.com/c/cf5fd

I want to use the UUID as an array id.

here is the expected output :

Array

(

    [123a-123a] => Array

        (

            [name_1] => A1

            [name_2] => A2

        )



    [123b-123b] => Array

        (

            [name_1] => B1

            [name_2] => B2

        )



    [123c-123c] => Array

        (

            [name_1] => C1

            [name_2] => C2

        )

)

---

My Answer:
To merge the arrays using the UUID value as the array id, you can modify your code as follows:

php
$arr1 = array();
$arr1['123a-123a'] = ['name' => 'A1'];
$arr1['123b-123b'] = ['name' => 'B1'];
$arr1['123c-123c'] = ['name' => 'C1'];

$arr2 = array();
$arr2['123a-123a'] = ['name' => 'A2'];
$arr2['123b-123b'] = ['name' => 'B2'];
$arr2['123c-123c'] = ['name' => 'C2'];

$final_array = array();
foreach ($arr1 as $key => $value) {
$final_array[$key] = array_merge($value, $arr2[$key]);
}

var_dump($final_array);
?>


This code will give you the expected output where the UUID values are used as array keys and the names from both arrays are merged into a single array for each UUID.