SplDoublyLinkedList::offsetExists
(PHP 5 >= 5.3.0, PHP 7)
SplDoublyLinkedList::offsetExists — Returns whether the requested $index exists
Description
public SplDoublyLinkedList::offsetExists ( mixed $index ) : bool
Parameters
-
index -
The index being checked.
Return Values
true if the requested index exists, otherwise false
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https://www.php.net/manual/en/spldoublylinkedlist.offsetexists.php