SplDoublyLinkedList
PHP 手册

SplDoublyLinkedList::count

(PHP 5 >= 5.3.0)

SplDoublyLinkedList::countCounts the number of elements in the doubly linked list.

说明

public int SplDoublyLinkedList::count ( void )

参数

此函数没有参数。

返回值

Returns the number of elements in the doubly linked list.


SplDoublyLinkedList
PHP 手册