Documentation

Books

Web Application Development with Yii 2 and PHP Web Application Development with Yii 2 and PHP
Author: Mark Safronov, Jeffrey Winesett
Publisher: Packt Publishing (September 2014)
Implement real-world web application features efficiently using the Yii development framework. Each chapter provides micro-examples that build upon each other to create the final macro-example, a basic CRM application. Filled with useful tasks to improve the maintainability of your applications.
Yii Project Blueprints Yii Project Blueprints
Author: Charles R. Portwood II
Publisher: Packt Publishing (September 2014)
Develop real-world web applications through easy-to-follow, step-by-step processes. Create eight projects from beginning to end to help you explore the full power of Yii. Build a fast, user-based, database-driven content management system with a dashboard and RESTful API.

Yii Book The first Yii book is titled "Web Application Development with Yii and PHP". It is an introductory book describing how to use Yii to develop a real world project. Check this out if you want to quickly master Yii.

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Second Yii book titled "Yii Application Development Cookbook" is a recipe book that contains 13 independent chapters full of useful recipes covering most interesting Yii parts. If you are a developer with a good knowledge of PHP5, are familiar with the basics of Yii, and have tried to develop applications using Yii, then this book is for you.

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The third book on the Yii framework is titled, simply enough, "The Yii Book". Written by Larry Ullman, author of the popular "Learning the Yii Framework" blog series, this book explains the most important features and concepts in the Yii framework, using practical, real-world examples.

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Tutorials

If you are new to Yii, you will likely want to start with these tutorials. They cover installation, fundamental concepts, and demonstrate how to build an entire database-driven Web application using Yii.

Class Reference

Once you are in the middle of developing a Yii application, you will become very familiar with the class reference. It contains the most accurate details about properties, methods and events of every class in the Yii framework.

Wiki Articles

Wiki articles are collaboratively written by Yii enthusiasts. You may find solutions to your specific Yii development tasks or problems among these articles.

Other Resources

In addition to the above documentation, there are several other resources contributed by active members in the Yii community that you may find useful.