(PHP 5 >= 5.1.0, PHP 7) Check whether the inner iterator's current element has children

(PHP 5 >= 5.1.0, PHP 7) Return the inner iterator's children contained in a RecursiveFilterIterator

(PHP 5 >= 5.3.0, PHP 7) Checks whether the queue is empty.

(PHP 5 >= 5.1.0, PHP 7) Constructs an AppendIterator

(PHP 5 >= 5.3.0, PHP 7) Inserts an element in the queue by sifting it up.

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

(PHP 5 >= 5.1.0, PHP 7) Return the interfaces which are implemented by the given class or interface

(PHP 5, PHP 7) Get inode for the current DirectoryIterator item

(PHP 5, PHP 7) Get last modification time of current DirectoryIterator item

(PHP 5 >= 5.1.0, PHP 7) Returns the index at which the iterator currently is