# SplHeap::rewind

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

SplHeap::rewind — Rewind iterator back to the start (no-op)

### 说明

public SplHeap::rewind(): void

This rewinds the iterator to the beginning. This is a no-op for heaps as the iterator is virtual and in fact never moves from the top of the heap.

### 参数

此函数没有参数。

### 返回值

没有返回值。

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