Hi,
I would like to present an RFC proposing support for native annotation. The naming, syntax and behavior are mostly influenced by HHVM Hack, but not exactly the same. The most interesting difference is an ability to use arbitrary PHP expressions as attribute values. These expressions are not evaluated, but stored as Abstract Syntax Trees, and later may be accessed (node by node) in PHP extensions, preprocessors and PHP scripts their selves. I think this ability may be useful for "Design By Contract", other formal verification systems, Aspect Oriented Programming, etc https://wiki.php.net/rfc/attributes Note that this approach is going to be native, in contrast to doc-comment approach that uses not well defined syntax, and even not parsed by PHP itself. Additional ideas, endorsement and criticism are welcome. Thanks. Dmitry.
