(PHP 5 >= 5.1.2, PHP 7) Gets an SplFileObject object for the file

(PHP 5 >= 5.2.0, PHP 7) Return hash id for given object

(PHP 5, PHP 7) Return the current element public

(PHP 5 >= 5.3.0, PHP 7) Constructs a new MultipleIterator

(PECL spl_types >= 0.1.0) Returns all consts (possible values) as an array.

(PHP 5 >= 5.1.0, PHP 7) Check whether the current element is valid

(PHP 5 >= 5.1.0, PHP 7) Get the current value

(PHP 5 >= 5.4.0, PHP 7) Write a field array as a CSV line

(PHP 5, PHP 7) Return the key for the current element

(PHP 5 >= 5.3.0, PHP 7) Extracts a node from top of the heap and sift up.