PHP Manual
SplDoublyLinkedList
Returns whether the requested $index exists

SplDoublyLinkedList::offsetExists

(PHP 5 >= 5.3.0, PHP 7)

SplDoublyLinkedList::offsetExists — Returns whether the requested $index exists

Descrierea

public SplDoublyLinkedList::offsetExists ( mixed $index ) : bool

Parametri

index: The index being checked.

Valorile întoarse

TRUE if the requested index exists, otherwise FALSE