A preliminary study on the template engine Smarty in PHP
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!
PHP's Purpose: Building Dynamic WebsitesApr 15, 2025 am 12:18 AMPHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.
PHP: Handling Databases and Server-Side LogicApr 15, 2025 am 12:15 AMPHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.
How do you prevent SQL Injection in PHP? (Prepared statements, PDO)Apr 15, 2025 am 12:15 AMUsing preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.
PHP and Python: Code Examples and ComparisonApr 15, 2025 am 12:07 AMPHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.
PHP in Action: Real-World Examples and ApplicationsApr 14, 2025 am 12:19 AMPHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.
PHP: Creating Interactive Web Content with EaseApr 14, 2025 am 12:15 AMPHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.
PHP and Python: Comparing Two Popular Programming LanguagesApr 14, 2025 am 12:13 AMPHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.
The Enduring Relevance of PHP: Is It Still Alive?Apr 14, 2025 am 12:12 AMPHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.
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
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
SublimeText3 Chinese version
Chinese version, very easy to use
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
Dreamweaver Mac version
Visual web development tools
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
