Functions
Each Smarty tag either prints a
variable or invokes some sort
of function. Functions are processed and displayed by enclosing the
function and its attributes into delimiters like so: {funcname
attr1="val" attr2="val"}.
function syntax
{$name}!
{else}
Welcome, {$name}!
{/if}
{include file="footer.tpl"}
]]>
Both built-in functions and custom functions have the same syntax in
the templates. Built-in functions are the inner workings of Smarty,
such as if, section and
strip. They cannot be modified. Custom functions are
additional functions implemented via plugins. They can be modified to
your liking, or you can add new ones. html_options and
html_select_date are examples of custom functions.