array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'en', ), 'this' => array ( 0 => 'function.hash-copy.php', 1 => 'hash_copy', 2 => 'Copy hashing context', ), 'up' => array ( 0 => 'ref.hash.php', 1 => 'Hash Functions', ), 'prev' => array ( 0 => 'function.hash-algos.php', 1 => 'hash_algos', ), 'next' => array ( 0 => 'function.hash-equals.php', 1 => 'hash_equals', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/hash/functions/hash-copy.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

hash_copy

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

hash_copy — 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

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