# mcrypt_list_modes

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_list_modes — Get an array of all supported modes

### Description

array mcrypt_list_modes ([ string `$lib_dir` ] )

mcrypt_list_modes() is used to get an array of all supported modes in the `lib_dir` .

mcrypt_list_modes() takes as optional parameter a directory which specifies the directory where all modes are located. If not specifies, the value of the mcrypt.modes_dir php.ini directive is used.

Example#1 mcrypt_list_modes() Example

`<?php
$modes = mcrypt_list_modes();
foreach ($modes as $mode) {
echo "$mode <br />\n";
}
?>`

The above example will produce a list with all supported algorithms in the default mode directory. If it is not set with the ini directive mcrypt.modes_dir, the default directory of mcrypt is used (which is /usr/local/lib/libmcrypt).