This tells Smarty whether or not to cache the output of the templates
to the
$cache_dir.
By default this is set to the constant Smarty::CACHING_OFF. If your templates consistently generate
the same content, it is advisable to turn on
$caching, as this may result in significant
performance gains.
You can also have multiple caches for the same template.
A constant value of Smarty::CACHING_LIFETIME_CURRENT or Smarty::CACHING_LIFETIME_SAVED enables caching.
A value of Smarty::CACHING_LIFETIME_CURRENT tells Smarty to use the current
$cache_lifetimevariable to determine if the cache has expired.A value of Smarty::CACHING_LIFETIME_SAVED tells Smarty to use the
$cache_lifetimevalue at the time the cache was generated. This way you can set the$cache_lifetimejust before fetching the template to have granular control over when that particular cache expires. See alsoisCached().If
$compile_checkis enabled, the cached content will be regenerated if any of the templates or config files that are part of this cache are changed.If
$force_compileis enabled, the cached content will always be regenerated.
See also
$cache_dir,
$cache_lifetime,
$cache_modified_check,
is_cached()
and the
caching section.