= 5.3.0, PHP 7, PHP 8)SplDoublyLinkedList::offsetExists — Returns whether the requested $index exists說明public">

SplDoublyLinkedList::offsetExists

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

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

說明

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

參數(shù)

index

The index being checked.

返回值

true if the requested index exists, otherwise false