Imagick::getImageSignature

(PECL imagick 2, PECL imagick 3)

Imagick::getImageSignature — Generates an SHA-256 message digest

public Imagick::getImageSignature(): string

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

此函数没有参数。

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

错误时抛出 ImagickException�