Docs can be updated through the normal SVN workflow (for users with a php.net account) or through a PR to https://github.com/php/doc-en

At the time of writing,

• Some functions, such as Memcache::append, aren't documented.
• Many functions have incorrect return types - Memcache::get can now return objects, booleans, etc for string keys

Related to #64

Besides just checking if a preprocessor variable has a given value (@rest\if name value) it would be very helpful to have its value inserted somewhere inside the documentation.
For example instead of incrementing the API version manually as in
// @rest\version 0.9.14

I would like to have it changed automatically like:
// @rest\version {myversion}
`$SwaggerGen->define('myversio