SplHeap::extract
(PHP 5 >= 5.3.0, PHP 7)
SplHeap::extract — Extracts a node from top of the heap and sift up
说明
参数
此函数没有参数。
返回值
The value of the extracted node.
错误／异常
Throws RuntimeException when the data-structure is empty.
(PHP 5 >= 5.3.0, PHP 7)
SplHeap::extract — Extracts a node from top of the heap and sift up
此函数没有参数。
The value of the extracted node.
Throws RuntimeException when the data-structure is empty.