yii is open source. Yii is an open source, object-oriented, component-based MVC PHP web application framework; it can be used to develop various web applications built with PHP.
Yii is an open source, object-oriented, component-based MVC PHP web application framework. Yii is pronounced "Yee" or [ji:], which means "simplicity and evolution" in Chinese, and it can be an acronym for "Yes It Is!"
Yii is released under the New BSD License (3-Clause License). This means it can be used for free to develop open source or proprietary web applications.
Yii comes with rich features, including MVC, DAO/ActiveRecord, I18N/L10N, caching, authentication and role-based access control, scaffolding, testing, etc., which can significantly shorten development time.
Yii is a general web programming framework that can be used to develop various web applications built with PHP. Because of its component-based framework structure and well-designed caching support, it is particularly suitable for developing large-scale applications, such as portals, communities, content management systems (CMS), e-commerce projects, and RESTful Web services.
Yii features include:
Model-View-Controller (MVC) design pattern.
Generate complex WSDL service specifications and manage Web service request processing.
Internationalization and localization (I18N and L10N), including message conversion, date and time formatting, number formatting and interface localization.
Hierarchical caching solution supports data caching, page caching, fragment caching and dynamic content. The cached storage medium can be changed.
Error handling and logging. Log messages can be categorized, filtered and routed to different destinations.
Security measures include protection against cross-site scripting (XSS), cross-site request forgery (CSRF) and cookie tampering.
Unit and functional testing based on PHPUnit and Selenium.
Automatically generate code for skeleton applications and CRUD applications through Gii tools.
Yii components and command line tools generate code that is XHTML compliant.
Designed to work with third-party code. For example, you can include code from PEAR or Zend Framework.
Extensions
The Yii project includes a repository of user-contributed extensions.
There is also an official extension library, zii, that was eventually merged with the core framework; it has been bundled with every version since Yii version 1.1.0 and contains additional behaviors and widgets such as grids and jQuery UI.
Recommended related article tutorials: "yii Framework Tutorial", "PHP Tutorial"
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Yii: The Rapid Development FrameworkApr 14, 2025 am 12:09 AMYii is a high-performance framework based on PHP, suitable for rapid development of web applications. 1) It adopts MVC architecture and component design to simplify the development process. 2) Yii provides rich functions, such as ActiveRecord, RESTfulAPI, etc., which supports high concurrency and expansion. 3) Using Gii tools can quickly generate CRUD code and improve development efficiency. 4) During debugging, you can check configuration files, use debugging tools and view logs. 5) Performance optimization suggestions include using cache, optimizing database queries and maintaining code readability.
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Yii's Architecture: MVC and MoreApr 11, 2025 pm 02:41 PMYii framework adopts an MVC architecture and enhances its flexibility and scalability through components, modules, etc. 1) The MVC mode divides the application logic into model, view and controller. 2) Yii's MVC implementation uses action refinement request processing. 3) Yii supports modular development and improves code organization and management. 4) Use cache and database query optimization to improve performance.
Yii 2.0 Deep Dive: Performance Tuning & OptimizationApr 10, 2025 am 09:43 AMStrategies to improve Yii2.0 application performance include: 1. Database query optimization, using QueryBuilder and ActiveRecord to select specific fields and limit result sets; 2. Caching strategy, rational use of data, query and page cache; 3. Code-level optimization, reducing object creation and using efficient algorithms. Through these methods, the performance of Yii2.0 applications can be significantly improved.
Yii RESTful API Development: Best Practices & AuthenticationApr 09, 2025 am 12:13 AMDeveloping a RESTful API in the Yii framework can be achieved through the following steps: Defining a controller: Use yii\rest\ActiveController to define a resource controller, such as UserController. Configure authentication: Ensure the security of the API by adding HTTPBearer authentication mechanism. Implement paging and sorting: Use yii\data\ActiveDataProvider to handle complex business logic. Error handling: Configure yii\web\ErrorHandler to customize error responses, such as handling when authentication fails. Performance optimization: Use Yii's caching mechanism to optimize frequently accessed resources and improve API performance.
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