Yii PHP Framework Version 2 - Development Package

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Type:yii2-extension 2015-03-18 16:24 UTC


Thank you for choosing Yii 2 - a modern PHP framework designed for professional Web development.

Yii 2 is a complete rewrite of its previous version Yii 1.1 which is one of the most popular PHP frameworks. Yii 2 inherits the main spirit behind Yii for being simple, fast and highly extensible. Yii 2 requires PHP 5.4 and embraces the best practices and protocols found in modern Web application development.

Latest Stable Version Total Downloads Reference Status Build Status Dependency Status HHVM Status Code Coverage Scrutinizer Quality Score Code Climate


apps/                ready-to-use application templates
    advanced/        a template suitable for building sophisticated Web applications
    basic/           a template suitable for building simple Web applications
    benchmark/       an application demonstrating the performance of Yii
build/               internally used build tools
docs/                documentation
extensions/          extensions
framework/           core framework code
tests/               tests of the core framework code


The minimum requirement by Yii is that your Web server supports PHP 5.4.


Yii 2.0 has a Definitive Guide and a Class Reference which cover every detail of Yii.

There is also a PDF version of the Definitive Guide and a Definitive Guide Mirror which update every 15 minutes.

For 1.1 users, you may refer to Upgrading from Yii 1.1 to have a general idea of what has changed in 2.0.


Your participation to Yii 2 development is very welcome!

You may participate in the following ways:

  • Report issues
  • Give us feedback or start a design discussion
  • Fix issues, develop features, write/polish documentation
    • Before you start, please adopt an existing issue (labelled with "ready for adoption") or start a new one to avoid duplicated efforts.
    • Please submit a merge request after you finish development.

In order to make it easier we've prepared special yii2-dev Composer package.