Newscoop\Entity\Attachment::getId PHP 메소드

    public function getId()
    {
        return $this->id;
    }

 /**
  * Get second level directory name
  *
  * @param Attachment $attachment
  *
  * @return string
  */
 private function getLevel2DirectoryName(Attachment $attachment)
 {
     if ($attachment->getId()) {
         $level2Dir = $attachment->getId() / $this->config['file_num_dirs_level_2'] % $this->config['file_num_dirs_level_1'];
     } else {
         $level2Dir = 0;
     }
     $level2ZeroPad = strlen($this->config['file_num_dirs_level_2']);
     return sprintf('%0' . $level2ZeroPad . 'd', $level2Dir);
 }