Gmagick::getimagesignature

    (PECL gmagick >= Unknown)

    Gmagick::getimagesignature — Generates an SHA-256 message digest

    说明

    public Gmagick::getimagesignature(): string

    Generates an SHA-256 message digest for the image pixel stream.

    参数

    此函数没有参数。

    返回值

    Returns a string containing the SHA-256 hash of the file.

    错误／异常

    错误时抛出 GmagickException。

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