PHP Manual
SplDoublyLinkedList
Checks whether the doubly linked list is empty

SplDoublyLinkedList::isEmpty

(PHP 5 >= 5.3.0, PHP 7)

SplDoublyLinkedList::isEmpty — Checks whether the doubly linked list is empty

说明

public SplDoublyLinkedList::isEmpty ( void ) : bool

参数

此函数没有参数。

返回值

Returns whether the doubly linked list is empty.

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