PHP specifications published for discussion

Over the 20 years of its existence, PHP has become one of the most popular languages ​​for web development. Despite having extensive documentation , PHP never had formal specifications. This situation needs to be fixed in light of the release of the next version of PHP 7 and existing PHP implementations such as HHVM. All these implementations should be as compatible with the specifications as possible, but they are not.

The HHVM developers drafted an initial draft , which was fully transferred to the public domain. Specifications are published on Github and are available for discussion and editing.