SplDoublyLinkedList::key
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplDoublyLinkedList::key — Return current node index
Description
public SplDoublyLinkedList::key(): int
This function returns the current node index
Parameters
This function has no parameters.
Return Values
The current node index.
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/spldoublylinkedlist.key.php
