Runtime Configuration

The behaviour of these functions is affected by
settings in php.ini.

For further details and definitions of the PHP_INI_* modes, see the
Where a
configuration setting may be set.

Here’s a short explanation of the configuration
directives.

mcrypt.algorithms_dir string

The directory that contains the algorithms.
Defaults to the directories compiled within libmcrypt, which is
typically /usr/local/lib/libmcrypt. See
mcrypt_list_algorithms() for additional
details.

mcrypt.modes_dir string

The directory that contains the modes. Defaults to
the directories compiled within libmcrypt, which is typically
/usr/local/lib/libmcrypt. See
mcrypt_list_modes() for additional
details.