(PHP 5 >= 5.1.0, PHP 7) Output all remaining data on a file pointer

(PHP 5 >= 5.3.0, PHP 7) Counts the number of elements in the queue.

(PHP 5 >= 5.3.0, PHP 7) Checks whether an object exists in the storage

(PHP 5 >= 5.3.0, PHP 7) Unserialize an ArrayObject

(PHP 5 >= 5.1.2, PHP 7) Gets the path without filename

(PHP 5 >= 5.2.0, PHP 7) Get the delimiter and enclosure character for CSV

(PHP 5 >= 5.1.2, PHP 7) Gets file permissions

(PHP 5 >= 5.3.0, PHP 7) Removes objects contained in another storage from the current storage

(PHP 5 >= 5.3.0, PHP 7) Constructs a new doubly linked list

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