(PHP 5 >= 5.3.0, PHP 7) Rewind iterator back to the start (no-op)

(PHP 5 >= 5.3.0, PHP 7) Recover from the corrupted state and allow further actions on the heap.

(PHP 5 >= 5.1.0, PHP 7) Seeks to a position

(PHP 5 >= 5.0.0, PHP 7) Returns whether the requested index exists

(PHP 5 >= 5.1.0, PHP 7) Gets line from file and parse as CSV fields

(PHP 5 >= 5.1.0, PHP 7) Adds an object in the storage

(PHP 5, PHP 7) Access the current element value

(PHP 5 >= 5.1.0, PHP 7) Get max depth public

(PHP 5 >= 5.1.0, PHP 7) Parses input from file according to a format

(PHP 5 >= 5.3.0, PHP 7) Move to the next node