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Chapter 8. Custom Functions

Smarty comes with several custom functions that you can use in the templates.

{assign}

{assign} is used for assigning template variables during the execution of a template.

Attribute Name Type Required Default Description
var string Yes n/a The name of the variable being assigned
value string Yes n/a The value being assigned

Example 8.1. {assign}


{assign var='name' value='Bob'}

The value of $name is {$name}.

  

The above example will output:


The value of $name is Bob.

  

Example 8.2. {assign} with some maths

This complex example must have the variables in `backticks`


{assign var=running_total value=`$running_total+$some_array[row].some_value`}

  

Example 8.3. Accessing {assign} variables from a PHP script

To access {assign} variables from a php script use get_template_vars(). Here's the template that creates the variable $foo.


{assign var='foo' value='Smarty'}

The template variables are only available after/during template execution as in the following script.


<?php

// this will output nothing as the template has not been executed
echo $smarty->get_template_vars('foo');

// fetch the template to a variable
$whole_page = $smarty->fetch('index.tpl');

// this will output 'smarty' as the template has been executed
echo $smarty->get_template_vars('foo');

$smarty->assign('foo','Even smarter');

// this will output 'Even smarter'
echo $smarty->get_template_vars('foo');

?>


The following functions can also optionally assign template variables.

{capture}, {include}, {include_php}, {insert}, {counter}, {cycle}, {eval}, {fetch}, {math}, {textformat}

See also assign() and get_template_vars().

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