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

(PHP 5 >= 5.3.0, PHP 7) Change the size of an array

(PHP 5 >= 5.1.0, PHP 7) Rewind to the first element

(PHP 5 >= 5.1.2, PHP 7) Gets file size public

(PHP 5, PHP 7) Rewind dir back to the start public

(PHP 5 >= 5.0.0, PHP 7) Check whether array contains more entries

(PHP 5 >= 5.3.0, PHP 7) Check whether the array contains more elements

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

(PHP 5 >= 5.3.0, PHP 7) Compare elements in order to place them correctly in the heap while sifting up.

(PHP 5 >= 5.3.0, PHP 7) Attaches iterator information