Piwik\Plugins\SitesManager\API::checkAndReturnCommaSeparatedStringList PHP 메소드

    private function checkAndReturnCommaSeparatedStringList($parameters)
    {
        $parameters = trim($parameters);
        if (empty($parameters)) {
            return '';
        }
        $parameters = explode(',', $parameters);
        $parameters = array_map('trim', $parameters);
        $parameters = array_filter($parameters, 'strlen');
        $parameters = array_unique($parameters);
        return implode(',', $parameters);
    }