RecursiveIteratorIterator::getSubIterator

    (PHP 5, PHP 7, PHP 8)

    RecursiveIteratorIterator::getSubIterator — The current active sub iterator

    说明

    public RecursiveIteratorIterator::getSubIterator(?int $level = null): ?RecursiveIterator
    警告

    本函数还未编写文档，仅有参数列表。

    参数

    level

    返回值

    The current active sub iterator on success; null on failure.

    更新日志

    版本 说明
    8.0.0 level is now nullable.

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