cssd-back/app/Helpers/helpers.php

<?php

if (!function_exists('pluckValues')) {
    /**
     * Extracts the values of a given key from an array of associative arrays.
     *
     * @param array $array The input array of associative arrays.
     * @param string $key The key whose values need to be extracted.
     * @return array An array containing the values of the specified key.
     */
    function pluckValues(array $array, string $key): array
    {
        return array_map(function ($item) use ($key) {
            return $item[$key] ?? null;
        }, $array);
    }
}