PHP 8.3.4 Released!

CachingIterator::key

(PHP 5, PHP 7, PHP 8)

CachingIterator::keyReturn the key for the current element

说明

public CachingIterator::key(): scalar
警告

本函数还未编写文档,仅有参数列表。

This method may return a key for the current element.

参数

此函数没有参数。

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