SplHeap::top()
(PHP 5 >= 5.3.0, PHP 7)
Peeks at the node from the top of the heap
说明
public SplHeap::top(void) : mixed
参数
此函数没有参数。
返回值
The value of the node on the top.
错误／异常
Throws RuntimeException when the data-structure is empty.
(PHP 5 >= 5.3.0, PHP 7)
Peeks at the node from the top of the heap
public SplHeap::top(void) : mixed
此函数没有参数。
The value of the node on the top.
Throws RuntimeException when the data-structure is empty.