public static function xml2array($xml)
    {
        $arr = [];
        if (!empty($xml)) {
            if (is_string($xml)) {
                $xml = simplexml_load_string($xml);
            }
            foreach ($xml->attributes() as $a) {
                $arr['@'.$a->getName()] = strval($a);
            }
            foreach ($xml->children() as $r) {
                if (count($r->children()) == 0) {
                    $arr[$r->getName()] = strval($r);
                } else {
                    $arr[$r->getName()][] = self::xml2array($r);
                }
            }
        }
        return $arr;
    }