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Functions {#language.syntax.functions}
=========
Every Smarty tag either prints a [variable](#language.variables) or
invokes some sort of function. These are processed and displayed by
enclosing the function and its [attributes](#language.syntax.attributes)
within delimiters like so: `{funcname attr1="val1" attr2="val2"}`.
{config_load file="colors.conf"}
{include file="header.tpl"}
{insert file="banner_ads.tpl" title="My Site"}
{if $logged_in}
Welcome, <span style="color:{#fontColor#}">{$name}!</span>
{else}
hi, {$name}
{/if}
{include file="footer.tpl"}
- Both [built-in functions](#language.builtin.functions) and [custom
functions](#language.custom.functions) have the same syntax within
templates.
- Built-in functions are the **inner** workings of Smarty, such as
[`{if}`](#language.function.if),
[`{section}`](#language.function.section) and
[`{strip}`](#language.function.strip). There should be no need to
change or modify them.
- Custom functions are **additional** functions implemented via
[plugins](#plugins). They can be modified to your liking, or you can
create new ones. [`{html_options}`](#language.function.html.options)
is an example of a custom function.
See also [`registerPlugin()`](#api.register.plugin)
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