These are used to override or specify the security settings when
security is enabled.
These are the possible settings:
PHP_HANDLING - true/false. If set to true, the
setting is not checked for security.
IF_FUNCS - This is an array of the names of permitted PHP functions in
INCLUDE_ANY - true/false. If set to true, any
template can be included from the file system, regardless of the
PHP_TAGS - true/false. If set to true,
tags are permitted in the templates.
MODIFIER_FUNCS - This is an array of the names of permitted
PHP functions used as variable modifiers.
ALLOW_CONSTANTS - true/false. If set to true, constants via
are allowed in the templates. The defaults is set to
"false" for security.