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    The SplHeap class

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

    Introduction

    The SplHeap class provides the main functionalities of a Heap.

    Class synopsis

    abstract class SplHeap implements Iterator, Countable {
    /* Methods */
    protected compare(mixed $value1, mixed $value2): int
    public count(): int
    public current(): mixed
    public extract(): mixed
    public insert(mixed $value): bool
    public isCorrupted(): bool
    public isEmpty(): bool
    public key(): int
    public next(): void
    public recoverFromCorruption(): bool
    public rewind(): void
    public top(): mixed
    public valid(): bool
    }

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