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    Gmagick::haspreviousimage

    (PECL gmagick >= Unknown)

    Gmagick::haspreviousimage — Checks if the object has a previous image

    说明

    public Gmagick::haspreviousimage(): mixed

    Returns true if the object has more images when traversing the list in the reverse direction.

    参数

    此函数没有参数。

    返回值

    Returns true if the object has more images when traversing the list in the reverse direction, returns false if there are none.

    错误／异常

    错误时抛出 GmagickException。

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