SassScriptFunction::import PHP Method

    private function import($dir)
    {
        $files = array();
        foreach (scandir($dir) as $file) {
            if ($file === '.' || $file === '..') {
                continue;
            }
            if (is_file($dir . DIRECTORY_SEPARATOR . $file)) {
                $files[] = $file;
                require_once $dir . DIRECTORY_SEPARATOR . $file;
            }
        }
        // foreach
        return $files;
    }