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

(PHP 5, PHP 7) Determine if current DirectoryIterator item is '.' or '..'

(PHP 5 >= 5.3.0, PHP 7) Gets the flag information

(PHP 5 >= 5.2.0, PHP 7) Sort array by values

(PHP 5 >= 5.1.2, PHP 7) Tells if the object references a regular file

(PHP 5 >= 5.2.0, PHP 7) Sets the regular expression flags.

(PHP 5 >= 5.2.0, PHP 7) Get the delimiter and enclosure character for CSV

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

(PHP 5 >= 5.1.2, PHP 7) Gets file permissions

(PHP 5 >= 5.3.0, PHP 7) Removes objects contained in another storage from the current storage