Return the string representation of the current element

# CachingIterator::__toString

(PHP 5, PHP 7, PHP 8)

CachingIterator::__toString — Return the string representation of the current element

### 说明

public function CachingIterator::__toString(): string
警告

本函数还未编写文档，仅有参数列表。

Get the string representation of the current element.

### 参数

此函数没有参数。

### 返回值

The string representation of the current element.

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