SomeBlackMagic / phpmd

        $libxml = libxml_use_internal_errors(true);

        $xml = simplexml_load_string(file_get_contents($fileName));

        if ($xml === false) {

            // Reset error handling to previous setting

            libxml_use_internal_errors($libxml);

            throw new \RuntimeException(trim(libxml_get_last_error()->message));

        }

        $ruleSet = new RuleSet();

        $ruleSet->setFileName($fileName);

            $libxml = libxml_use_internal_errors(true);

            $xml = simplexml_load_string(file_get_contents($ruleSetFileName));

            if ($xml === false) {

                // Reset error handling to previous setting

                libxml_use_internal_errors($libxml);

                throw new \RuntimeException(trim(libxml_get_last_error()->message));

            }

            foreach ($xml->children() as $node) {

                /** @var $node \SimpleXMLElement */