smarty: Definition, Synonyms from Answers.com

For the confectionery with a similar name, see Smarties.

Smarty Templates

Developer(s)	Monte Ohrt, Messju Mohr
Stable release	2.6.25 / 2009-05-23; 24 days ago
Preview release	3.0 Alpha / 2008-10-17; 7 months ago
Type	Template Engine
License	LGPL
Website	www.smarty.net

Smarty is a web template system written in PHP. Smarty is primarily promoted as a tool for separation of concerns, which is a common design strategy for certain kinds of applications.^[1]^[2]

Smarty generates web content by the placement of special Smarty tags within a document. These tags are processed and substituted with other code.

Tags are directives for Smarty that are enclosed by template delimiters. These directives can be variables, denoted by a dollar sign ($), functions, logical or loop statements. Smarty allows PHP programmers to define custom functions that can be accessed using Smarty tags.

Smarty is intended to simplify compartmentalization, allowing the presentation of a web page to change separately from the back-end. Ideally, this eases the costs and efforts associated with software maintenance. Under successful application of this development strategy, designers are shielded from the back-end coding, and PHP programmers are shielded from the presentation coding.

1 Features
2 Code example
3 Notes and references
4 See also
5 External links

Features

Smarty supports several high-level template programming features, including:

Control flow statements, foreach
if, elseif, else statements
variable modifiers - For example {$variable|nl2br}
functions - For example {html_select_date start_year='-5' end_year='+5'}
output filters
possiblity to create own modifiers / functions / output filters
advanced caching of pages

along with other features. There are other template engines that also support these features. Smarty templates are often incorporated into existing PHP web applications to some extent. More often it is used where a web application or a website has a theme system built into it, where the templates can be changed from theme to theme.

Code example

Since Smarty separates PHP from HTML, you have two files. One contains the presentation code, including Smarty variables:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html>
<head>
   <title>{$title_text|escape}</title>
   <meta http-equiv="content-type" content="text/html; charset=utf-8" />
</head>
 
<body> {* This is a little comment that won't be visible in the HTML source *}
 
{$body_html}
 
</body><!-- this is a little comment that will be seen in the HTML source -->
</html>

In the business logic code you can configure Smarty to use this template:

define('SMARTY_DIR', 'smarty-2.6.22/' );
require_once(SMARTY_DIR . 'Smarty.class.php');
 
$smarty = new Smarty();
$smarty->template_dir = './templates/';
$smarty->compile_dir = './templates/compile/';
 
$smarty->assign('title_text', 'TITLE: This is the Smarty basic example ...');
$smarty->assign('body_html', '<p>BODY: This is the message set using assign()</p>');
 
$smarty->display('index.tpl');

Notes and references

^ Smarty separates PHP code, (often represented as business logic) from HTML, (often represented as presentation logic).
^ Parr, Terence John (2004). Enforcing strict model-view separation in template engines. Proceedings of the 13th international conference on World Wide Web. ISBN 1-58113-844-X.

External links

Official site
PHP Templating with Smarty by Cezar Floroiu - Smarty tutorial
Smarty vs. XML/XSLT - from DevPapers.com by Sergey Makogon
Smarty Cheat Sheet Smarty Cheat Sheet for Templates Designers and Programmers
Timestretch: PHP, MySQL, and Smarty Programming - Also see the PHP2 page for more.

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smarty

Contents

Features

Code example

Notes and references

See also

External links