Flatten Multidimensional Array to HTML Input Name Array

Flatten.php

<?php

use Illuminate\Http\UploadedFile;

class Flatten
{
    /**
     * Used for turning an array into a PHP friendly name.
     *
     * @param array $array
     * @param string $prefix
     * @param string $suffix
     * @return array
     */
    protected function flatten(array $array, string $prefix = '', string $suffix = ''): array
    {
        $result = [];

        foreach ($array as $key => $value) {
            if (is_array($value)) {
                $result = array_merge($result, $this->flatten($value, $prefix . $key . $suffix . '[', ']'));
            } else {
                if ($value instanceof UploadedFile) {
                    $result[] = [
                        'name' => $prefix . $key . $suffix,
                        'filename' => $value->getClientOriginalName(),
                        'Mime-Type' => $value->getClientMimeType(),
                        'contents' => file_get_contents($value->getPathname()),
                    ];
                } else {
                    $result[] = [
                        'name' => $prefix . $key . $suffix,
                        'contents' => $value,
                    ];
                }
            }
        }

        return $result;
    }
}