PSR adoption

The table below indicates PSRs usage in Yii framework.

PSR #	Purpose	Status
0	Autoloading	Deprecated standard.
1	Code Style	Partially adopted.
2	Code Style	Partially adopted.
3	Logger	Supported as consumer via extension. Mentioned in logging guide.
4	Autoloading	Supported.
5	PHPDoc	Partially supported. We're writing phpdoc according to support in PhpStorm and NetBeans IDEs.
6	Cache	Unlikely to be adopted as provider. Consumer is possible. To be discussed.
7	HTTP Message
8	Huggable	It was a joke. Won't be adopted.
9	Security Advisories
10	Security Reporting
11	Container
12	Code style	Partially adopted.
13	Hypermedia Links
14	Events
15	HTTP Middlewares
16	Cache	Could be adopted as both consumer and provider in major versions.
17	HTTP Factories