Piwik\Plugins\WebsiteMeasurable\Settings\Urls::checkUrls PHP Method

    public function checkUrls($urls)
    {
        $urls = $this->cleanParameterUrls($urls);
        foreach ($urls as $url) {
            if (!UrlHelper::isLookLikeUrl($url)) {
                throw new Exception(sprintf(Piwik::translate('SitesManager_ExceptionInvalidUrl'), $url));
            }
        }
    }