(PHP 5 >= 5.2.0, PHP 7) Get flags public int

(PHP 5, PHP 7) Get inode for the current DirectoryIterator item

(PHP 5, PHP 7) Get last modification time of current DirectoryIterator item

(PHP 5 >= 5.3.0, PHP 7) Check validity public

(PHP 5 >= 5.2.0, PHP 7) The offsetExists purpose