Built-in Functions

Chapter 7. Built-in Functions

Smarty comes with several built-in functions. Built-in functions are integral to the template language. You cannot create custom functions with the same names, nor can you modify built-in functions.


{capture} is used to collect the output of the template into a variable instead of displaying it. Any content between {capture name="foo"} and {/capture} is collected into the variable specified in the name attribute. The captured content can be used in the template from the special variable $smarty.capture.foo where "foo" is the value passed in the name attribute. If you do not supply a name attribute, then "default" will be used as the name. All {capture} commands must be paired with {/capture}. You can nest capture commands.

Attribute NameTypeRequiredDefaultDescription
namestringnodefaultThe name of the captured block
assignstringNon/aThe variable name where to assign the captured output to


Be careful when capturing {insert} output. If you have caching enabled and you have {insert} commands that you expect to run within cached content, do not capture this content.

Example 7-1. capturing template content

{* we don't want to print a table row unless content is displayed *}
{capture name=banner}
  {include file='get_banner.tpl'}

{if $smarty.capture.banner ne ''}

Example 7-2. capturing content to a variable

This example also demonstrates the {popup} function

{capture name=some_content assign=popText}
    .... some content ....
  <a href="#" {popup caption='Help' text=$popText}>help</a>

See also $smarty.capture, {eval}, {fetch}, fetch() and {assign}.

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