Merging arrays based on a value of the key

Question

I have two arrays of arrays that have an id key, and I'd like to merge the data together based on that array's key and key value. The data would look something like:

    $color = [
        ['id' => 1, 'color' => 'red'],
        ['id' => 2, 'color' => 'green'],
        ['id' => 3, 'color' => 'blue'],
    ];

    $size = [
        ['id' => 1, 'size' => 'SM'],
        ['id' => 2, 'size' => 'XL'],
        ['id' => 3, 'size' => 'MD'],
        ['id' => 4, 'size' => 'LG'],
    ];

    $combined = [
        ['id' => 1, 'color' => 'red', 'size' => 'SM'],
        ['id' => 2, 'color' => 'green', 'size' => 'XL'],
        ['id' => 3, 'color' => 'blue', 'size' => 'MD'],
        ['id' => 4, 'size' => 'LG'],
    ];

Is there a particularly efficient function or trick for handling something like this? Or should I just loop through the elements of one array and push the contents to the other?

I'm also using Laravel, and the data is a result of an eloquent query, so I can also utilize the collections if it would make the code cleaner.

Answer 1

Use array_replace_recursive function for easy and fast way

array_replace_recursive($color, $size)