Hash Functions
PHP Manual

hash_copy

Copy hashing context

Description

HashContext hash_copy(HashContext $context)

Parameters

context

Hashing context returned by hash_init.

Return Values

Returns a copy of Hashing Context.

Changelog

Version Description
7.2.0 Accept and return HashContext instead of resource.

Examples

Example #1 hash_copy example

<?php
$context = hash_init("sha256");
hash_update($context, "The quick brown fox ");

/* copy context to be able to continue using it */
$copy_context = hash_copy($context);

echo hash_final($context), "\n";

hash_update($copy_context, "jumped over the lazy dog.");
echo hash_final($copy_context), "\n";
?>

The above example will output:

b29d66e56ed90cce9b0165c43fedec612b60a071974d8be4513e18580d55b5bd
68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483