Imagick::getImageSignature

(PECL imagick 2.0.0)

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

说明

Imagick::getImageSignature ( void ) : string

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

返回值

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

错误／异常

错误时抛出 ImagickException。