PHP - Manual: SplHeap::valid
2025-02-27
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplHeap::valid — Check whether the heap contains more nodes
Checks if the heap contains any more nodes.
此函数没有参数。
Returns true if the heap contains any more nodes, false otherwise.
true
false
官方地址:https://www.php.net/manual/en/splheap.valid.php