Begin iteration

# RecursiveTreeIterator::beginIteration

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

RecursiveTreeIterator::beginIteration — Begin iteration

### 说明

public function RecursiveTreeIterator::beginIteration(): RecursiveIterator

Called when iteration begins (after the first RecursiveTreeIterator::rewind() call).

警告

本函数还未编写文档，仅有参数列表。

### 参数

此函数没有参数。

### 返回值

A RecursiveIterator.

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