SplDoublyLinkedList::count()
(PHP 5 >= 5.3.0, PHP 7)
Counts the number of elements in the doubly linked list
说明
public SplDoublyLinkedList::count(void) : int
参数
此函数没有参数。
返回值
Returns the number of elements in the doubly linked list.
(PHP 5 >= 5.3.0, PHP 7)
Counts the number of elements in the doubly linked list
public SplDoublyLinkedList::count(void) : int
此函数没有参数。
Returns the number of elements in the doubly linked list.