The Yii framework is an open-source PHP framework for rapidly-developing, modern Web applications. It is built around the Model-View-Controller composite pattern. Yii provides secure and professional features to create robust projects rapidly.
Yii provides secure and professional features to create robust projects rapidly. The Yii framework has a component-based architecture and a full solid caching support. Therefore, it is suitable for building all kinds of Web applications: forums, portals, content managements systems, RESTful services, e-commerce websites, and so forth. It also has a code generation tool called Gii that includes the full CRUD(Create-Read-Update-Delete) interface maker.
The core features of Yii are as follows −
- Yii implements the MVC architectural pattern.
- It provides features for both relational and NoSQL databases.
- Yii never over-designs things for the sole purpose of following some design pattern.
- It is extremely extensible.
- Yii provides multi-tier caching support.
- Yii provides RESTful API development support.
- It has high performance.
Overall, if all you need is a neat interface for the underlying database, then Yii is the right choice. Currently, Yii has two versions: 1.1 and 2.0.
Version 1.1 is now in maintenance mode and Version 2 adopts the latest technologies, including Composer utility for package distribution, PSR levels 1, 2, and 4, and many PHP 5.4+ features. It is version 2 that will receive the main development effort over the next few years.
Yii is a pure OOP (Object-Oriented Programming) framework. Hence, it requires a basic knowledge of OOP. The Yii framework also uses the latest features of PHP, like traits and namespaces. It would be easier for you to pick up Yii 2.0 if you understand these concepts.
The major requirements for Yii2 are PHP 5.4+ and a web server. Yii is a powerful console tool, which manages database migrations, asset compilation, and other stuff. It is recommended to have a command line access to the machine where you develop your application.