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The definitive guide to Yii3

We release this guide under the Terms of Yii Documentation.

Introduction

Getting started

Application structure

Key concepts

Handling requests

Views

Working with databases

Getting data from users

Displaying data

Security

Caching

REST APIs

Development tools

  • Debug toolbar and debugger
  • Generating code using Gii
  • Generating API documentation

Testing

Special topics

Helpers

Extras