Home/ Manual/ hash / functions/ hash_copy

hash_copy

PHP function Edit on GitHub ✎

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

Copy hashing context

Description

hash_copy(HashContext $context): HashContext

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

hash_copy() example

php

<?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:

output

b29d66e56ed90cce9b0165c43fedec612b60a071974d8be4513e18580d55b5bd
68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483

Source: reference/hash/functions/hash-copy.xml · from the official PHP manual (php/doc-en)