SplDoublyLinkedList::key
(PHP 5 >= 5.3.0, PHP 7)
SplDoublyLinkedList::key — Return current node index
Description
public SplDoublyLinkedList::key ( ) : mixed
This function returns the current node index
Parameters
This function has no parameters.
Return Values
The current node index.
© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/spldoublylinkedlist.key.php