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。

相关文章
php ibm db2 函数 returns the last connection error message and sqlcode valuephp imap 函数 read an overview of the information in the headers of the given messagephp semaphore 函数 receive a message from a message queuephp sodium 函数 encrypt a messagephp statistic 函数 generates a random deviate from the non central chi square distributionphp gmagick generates an sha 256 message digestphp imagick adds adaptive blur filter to imagephp imagick generates an sha 256 message digestphp imagick applies a digital filterphp imagick removes repeated portions of images to optimizephp imagick returns the configured fontsphp imagick resample image to desired resolutionphp imagick sets the object s default compression typephp imagick sets the depth of a particular image channelphp imagick set the iterator positionphp imagick sets the image typephp imagick sets the size and offset of the imagick objectphp imagick hides a digital watermark within the imagephp imagick discards all but one of any pixel colorphp phar return md5/sha1/sha256/sha512/openssl signature of a phar archive
关注编程学问公众号