This is the name of the directory where template caches are
stored. By default this is
./cache, meaning that
Smarty will look for the cache/ directory
in the same directory as the executing php script.
This directory must
be writeable by the web server,
see install for more info.
You can also use your own custom cache implementation
to control cache files, which will ignore this setting.
See also
$use_sub_dirs.
This setting must be either a relative or absolute path. include_path is not used for writing files.
It is not recommended to put this directory under the web server document root.
As of Smarty 3.1 the attribute $cache_dir is no longer accessible directly. Use
getCacheDir() and
setCacheDir() instead.
See also
getCacheDir(),
setCacheDir(),
$caching,
$use_sub_dirs,
$cache_lifetime,
$cache_modified_check
and the
caching section.