All PHP FIG code must be licensed under the MIT license.
Code includes any pure PHP files (including but not limited to classes,
functions, interfaces and procedural code), as well as any code inside of
examples, tutorials, supporting documents, website code and the PSRs themselves.
All remaining non-code items must be licensed under the Creative Commons BY 3.0
license. Attribution policies will be defined in the bylaws based on the type
of asset created.