SplDoublyLinkedList::key
SplDoublyLinkedList::key
(PHP 5 >= 5.3.0, PHP 7)
SplDoublyLinkedList::key — Return current node index
Description
public mixed SplDoublyLinkedList::key ( void )
This function returns the current node index
Parameters
This function has no parameters.
Return Values
The current node index.