(draft) Understanding Yii 3

Comparing #2 with #3

Revision #3 was created by Mehdi Achour Mehdi Achour on Dec 17, 2018, 8:27:24 PM.

Fix typos thanks to @hiqsol

Content

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## Introduction


*This document is intended for an audience already familiar with [Yii2](https://www.yiiframework.com/doc/guide/2.0/en).*
*It's meant to rassemblebring together all information related to Yii 3 in one place to make it easier to get on track.*

Yii 3 is the second major rewrite of the Yii framework.
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* Logging is now compliant with PSR-3
* Caching is now compliant with PSR-16
 
 * Dependency Injection is now compliant with PSR-11


You can check the complete [CHANGELOG](https://github.com/yiisoft/yii-core/blob/master/CHANGELOG.md#300-under-development) for an exhaustive list of modifications.

## Yii 3 composer packages
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