(PHP 5 >= 5.3.0, PHP 7) Retrieve the underlaying resource

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Tests for end-of-file on a file pointer

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Seeks to specific location in a stream

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Read entry from directory handle

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Constructs a new stream wrapper