PHP | hash_copy() Function
Last Updated :
29 Oct, 2018
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The hash_copy() function is an inbuilt function in PHP which is used to get the copy of hashing context.
Syntax:
php
php
hash_copy( $context )Parameters: This function accepts single parameter $context which is used to specify the hashing context returned by hash_init() function. Return Value: This function returns a copy of Hashing Context. Below programs illustrate the hash_copy() function in PHP: Program 1:
<?php
// Initialize an incremental
// hashing context
$context = hash_init("sha1");
// Copy context using hash_copy function
$cp_context = hash_copy($context);
// Finalize an incremental hash
// and return resulting digest
echo hash_final($context), "\n";
// Update context
hash_update($cp_context, "GFG");
// Print finalize context
echo hash_final($cp_context), "\n";
?>
Output:
Program 2:
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<?php
// Initialize an incremental
// hashing context
$context = hash_init("md5");
// Copy context using hash_copy function
$cp_context = hash_copy($context);
// Finalize an incremental hash
// and return resulting digest
echo hash_final($context), "\n";
// Update context
hash_update($cp_context, "GFG");
// Print finalize context
echo hash_final($cp_context), "\n";
?>
Output:
Reference: http://php.net/manual/en/function.hash-copy.php
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