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<mcrypt_decryptmcrypt_enc_get_block_size>
^Mcrypt FunctionsLast updated: Mon, 26 Oct 2026

mcrypt_enc_get_algorithms_name

(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)

mcrypt_enc_get_algorithms_name — Returns the name of the opened algorithm

Warning

This function has been DEPRECATED as of PHP 7.1.0 and REMOVED as of PHP 7.2.0. Relying on this function is highly discouraged.

Description

function mcrypt_enc_get_algorithms_name(resource $td): string

This function returns the name of the algorithm.

Parameters

td

The encryption descriptor.

Return Values

Returns the name of the opened algorithm as a string.

Examples

Example #1 mcrypt_enc_get_algorithms_name() example

<?php
$td = mcrypt_module_open(MCRYPT_CAST_256, '', MCRYPT_MODE_CFB, '');
echo mcrypt_enc_get_algorithms_name($td). "\n";

$td = mcrypt_module_open('cast-256', '', MCRYPT_MODE_CFB, '');
echo mcrypt_enc_get_algorithms_name($td). "\n";
?>

The above example will output:

CAST-256
CAST-256

<mcrypt_decryptmcrypt_enc_get_block_size>
^Mcrypt FunctionsLast updated: Mon, 26 Oct 2026