Gmagick
PHP Manual

Gmagick::getimagesignature

Generates an SHA-256 message digest

Description

public string Gmagick::getimagesignature ( void )

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

Parameters

This function has no parameters.

Return Values

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

Errors/Exceptions

Throws an GmagickException on error.