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    RecursiveIteratorIterator::key

    (PHP 5, PHP 7, PHP 8)

    RecursiveIteratorIterator::key — Access the current key

    说明

    public RecursiveIteratorIterator::key(): mixed
    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

    The current key.

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