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# 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.

範例 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.

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