# mcrypt_list_algorithms

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_list_algorithms — Get an array of all supported ciphers

### Description

array mcrypt_list_algorithms ([ string `$lib_dir` ] )

mcrypt_list_algorithms() is used to get an array of all supported algorithms in the `lib_dir` parameter.

mcrypt_list_algorithms() takes an optional `lib_dir` parameter which specifies the directory where all algorithms are located. If not specifies, the value of the mcrypt.algorithms_dir php.ini directive is used.

Example#1 mcrypt_list_algorithms() Example

`<?php
$algorithms = mcrypt_list_algorithms("/usr/local/lib/libmcrypt");
foreach ($algorithms as $cipher) {
echo "$cipher<br />\n";
}
?>`

The above example will produce a list with all supported algorithms in the "/usr/local/lib/libmcrypt" directory.