问停止用户创建4深度子文件夹

EN

try
{
    $strBaseDirectory = FCPATH . 'images/';
    $strUserDirectory = $this->input->get('directory');

    if (empty($strUserDirectory) || strpbrk($strUserDirectory, "\\.?%*:|\"<>"))    throw new InvalidArgumentException('Invalid directory');
    $strUserDirectory = trim($strUserDirectory, '/');
    $arrPathParts = explode('/', $strUserDirectory);

    if (count($arrPathParts) > 3)   throw new InvalidArgumentException('To much folders...');

    $arrPathParts = array_map(function($item)    {
        return trim($item);
    }, $arrPathParts);

    $key = array_search('', $arrPathParts);

    if ($key)   throw new InvalidArgumentException('One or more Foldername(s) contain only spaces...');

    echo '<pre>';
    print_r($arrPathParts);

    $strUserDirectory = implode('/', $arrPathParts);

    $blnDirectoryCreated = mkdir($strBaseDirectory.$strUserDirectory);

    $arrJson = [
        'success'   => $blnDirectoryCreated,
        'message'   => 'whatever...'
    ];

}
catch (Exception $e)
{
    $arrJson = [
        'success'   => false,
        'message'   => $e->getMessage()
    ];
}

$this->output->set_content_type('Content-Type: application/json');
$this->output->set_output(json_encode($arrJson));