<?php

/*
 * This file is part of the Maestro Project.
 * Copyright (C) Compos Juliot
 */

namespace App\IU\Service;

use App\IU\Adapter\ArrayRemoveEmptyInterface;

class ArrayRemoveEmptyService implements ArrayRemoveEmptyInterface
{
    /**
     * @param $haystack
     *
     * @return mixed
     */
    public function arrayRemoveEmpty($haystack)
    {
        if ($haystack) {
            foreach ($haystack as $key => $value) {
                if (is_array($value)) {
                    $haystack[$key] = $this->arrayRemoveEmpty($haystack[$key]);
                }

                if (empty($haystack[$key])) {
                    unset($haystack[$key]);
                }
            }

            return $haystack;
        }

        return null;
    }
}