Insert array in multidimensional array dynamically with PHP [closed] - php

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I’m struggling with array manipulation in php. I have two multidimensional arrays and I would like to insert each element of the second one into each element of the first one. I tried a lot of different native php functions to try to manipulate my two arrays but it seems like I am at a dead end.
I'll be very thankfull for any kind of help
Here are my two arrays :
1.
2019 => [
'Sweden' => [
'population' => '1000'
]
]
2020 => [
'Sweden' => [
'population' => '1500'
]
]
O => [
'Facebook' => [
'accounts' => '340'],
'Instagram' => [
'accounts' => '750'],
'Linkedin' => [
'accounts' => '560'],
]
1 => [
'Facebook' => [
'accounts' => '290'],
'Instagram' => [
'accounts' => '800'],
'Linkedin' => [
'accounts' => '378'],
]
Now what I would like to have as a final array will be :
2019 => [
'Sweden' => [
'population' => '1000',
'Facebook' => [
'accounts' => '340'],
'Instagram' => [
'accounts' => '750'],
'Linkedin' => [
'accounts' => '560'],
]
]
2020 => [
'Sweden' => [
'population' => '1500',
'Facebook' => [
'accounts' => '290'],
'Instagram' => [
'accounts' => '800'],
'Linkedin' => [
'accounts' => '378'],
]
]

Answer 1

Based on the information you provided, you want to set up an algorithm like this:
Note: If your arrays are of variable nature, edit this algorithm accordingly.
$array1 = [
2019 => [
'Sweden' => [
'population' => '1000',
],
],
2020 => [
'Sweden' => [
'population' => '1500',
],
],
];
$array2 = [
0 => [
'Facebook' => [
'accounts' => '340',
],
'Instagram' => [
'accounts' => '750',
],
'Linkedin' => [
'accounts' => '560',
],
],
1 => [
'Facebook' => [
'accounts' => '290',
],
'Instagram' => [
'accounts' => '800',
],
'Linkedin' => [
'accounts' => '378',
],
],
];
$country = 'Sweden';
$orderedIndex = 0;
foreach ($array1 as $index => $item) {
foreach ($array2[$orderedIndex] as $social => $accounts) {
$array1[$index][$country][$social] = $accounts;
}
$orderedIndex++;
}
dd($array1); // result