The SplMaxHeap class

(PHP 5 >= 5.3.0, PHP 7, PHP 8)


The SplMaxHeap class provides the main functionalities of a heap, keeping the maximum on the top.


class SplMaxHeap extends SplHeap {
/* 方法 */
protected compare(mixed $value1, mixed $value2): int
/* 继承的方法 */
protected SplHeap::compare(mixed $value1, mixed $value2): int
public SplHeap::count(): int
public SplHeap::insert(mixed $value): bool
public SplHeap::isCorrupted(): bool
public SplHeap::isEmpty(): bool
public SplHeap::key(): int
public SplHeap::next(): void
public SplHeap::rewind(): void
public SplHeap::valid(): bool


  • SplMaxHeap::compare — Compare elements in order to place them correctly in the heap while sifting up