The behaviour of these functions is affected by settings in php.ini.
| Name | Default | Changeable | Changelog |
|---|---|---|---|
| mcrypt.algorithms_dir | NULL | PHP_INI_ALL | Available since PHP 4.0.2. |
| mcrypt.modes_dir | NULL | PHP_INI_ALL | Available since PHP 4.0.2. |
For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.