Generator::valid

    (PHP 5 >= 5.5.0, PHP 7, PHP 8)

    Generator::valid — 检查迭代器是否被关闭

    说明

    public Generator::valid(): bool

    参数

    此函数没有参数。

    返回值

    如果迭代器已被关闭返回 false，否则返回 true。

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