PHP - Manual: SplHeap::top
2024-11-15
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplHeap::top — Peeks at the node from the top of the heap
此函数没有参数。
The value of the node on the top.
Throws RuntimeException when the data-structure is empty.
官方地址:https://www.php.net/manual/en/splheap.top.php