FileManagerController::recursiveFolders PHP Method

    protected function recursiveFolders($directory)
    {
        $output = '';
        $output .= '<option value="' . substr($directory, strlen(Yii::app()->params['imagePath'] . 'data/')) . '">' . substr($directory, strlen(Yii::app()->params['imagePath'] . 'data/')) . '</option>';
        $directories = glob(rtrim(str_replace('../', '', $directory), '/') . '/*', GLOB_ONLYDIR);
        foreach ($directories as $directory) {
            $output .= $this->recursiveFolders($directory);
        }
        return $output;
    }