A preliminary study on the template engine Smarty in PHP-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

A preliminary study on the template engine Smarty in PHP

王林

May 11, 2023 pm 05:15 PM

phpsmartytemplate engine

Nowadays, website development is inseparable from an important component-template engine. A template engine refers to a tool that combines page templates and data to generate HTML code with a specific format. In various website development frameworks, the template engine is an essential component, because the template engine can greatly reduce the duplication of code and improve the dynamics of the page. One of the most common and popular template engines is Smarty.

Smarty is a DSL (Domain Specific Language) template engine developed based on the PHP language. It is a substitute for the native PHP template engine. Smarty has features such as template caching, variable adjustment, cross-site scripting protection and extended syntax, and is widely used in website development. Smarty is an open source template engine, so you are free to use it anywhere. Smarty can be used not only in PHP web design, but also in other environments.

Why choose Smarty template engine?

Template Cache

Smarty saves compiled template files through caching, thereby speeding up the processing of template files. Smarty will automatically check whether the template file has been updated. If the template file changes, it will regenerate the compiled template file.

Variable Adjustment

Smarty allows developers to use variable adjusters to handle the data type and format of variables. For example, in a template file, you can use {$var|upper} to convert all characters in the variable $var to uppercase characters. Smarty also provides hundreds of variable regulators to meet your various needs.

Cross-site scripting protection

Smarty has cross-site scripting protection (XSS Protection) turned on by default, which can automatically convert static content into HTML format to prevent malicious attacks.

Extended syntax

Smarty supports extended syntax, and various tags and functions can be customized to meet your specific needs.

Basic usage of Smarty

Installing Smarty

First you need to download Smarty locally, and then unzip it to your web directory.

Create template files and compile files

First you need to create a template file, the file name usually ends with .tpl. At the same time, Smarty also needs a directory to save compiled files. This directory needs to be set to the templates_c directory under the Smarty directory. Stored in this directory are compiled template files.

Creating Smarty objects

First, you need to load the Smarty class library in your PHP code.

require_once('Smarty.class.php');

Then, you need to create a Smarty object and set various parameters and options of Smarty.

$smarty = new Smarty();
$smarty->template_dir = '/path/to/templates';
$smarty->compile_dir = '/path/to/compile';
$smarty->cache_dir = '/path/to/cache';

Assign variables and display of template files

In web applications, you usually need to get data from a database or other places, and then display this data in the template middle. You can assign a PHP variable to a Smarty variable using the $smarty->assign() method.

$smarty->assign('title', 'My Page Title');
$smarty->assign('content', 'This is the body of my page.');

Then, you need to use Smarty’s display() method to display the template file.

$smarty->display('mypage.tpl');

In mypage.tpl, you can use Smarty’s various template tags to display your variables and logic. The following is an example:

<html>
<head>
    <title>{$title}</title>
</head>
<body>
    <div>{$content|nl2br}</div>
</body>
</html>

The above example displays the $title and $content variables assigned from PHP in the HTML page.

Summary

Smarty template engine is very important for website development, especially in large-scale application development. In order to save time and development costs, Smarty has become the most effective template engine at the moment. One of the technologies. Smarty is not just a template engine tool, it has also become one of the most practical and common PHP tools. In the future, with the development of the Internet and the PHP programming language, the Smarty template engine will become more powerful and popular.

The above is the detailed content of A preliminary study on the template engine Smarty in PHP. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

PHP Performance Tuning for High Traffic WebsitesMay 14, 2025 am 12:13 AM

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

Dependency Injection in PHP: Code Examples for BeginnersMay 14, 2025 am 12:08 AM

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

PHP Performance: is it possible to optimize the application?May 14, 2025 am 12:04 AM

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

PHP Performance Optimization: The Ultimate GuideMay 14, 2025 am 12:02 AM

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

PHP Dependency Injection Container: A Quick StartMay 13, 2025 am 12:11 AM

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Dependency Injection vs. Service Locator in PHPMay 13, 2025 am 12:10 AM

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHP performance optimization strategies.May 13, 2025 am 12:06 AM

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHP Email Validation: Ensuring Emails Are Sent CorrectlyMay 13, 2025 am 12:06 AM

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl

See all articles

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

How to fix KB5055612 fails to install in Windows 10?

4 weeks agoByDDD

Roblox: Grow A Garden - Complete Mutation Guide

3 weeks agoByDDD

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys

3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Nordhold: Fusion System, Explained

4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook

3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software