On php.net, the Release Notes are a collection of all official information and code available in past PHP releases. The most recent and current downloads are also available. All past downloads are archived and no longer available for downloading.
The documentation section contains areas with explanations of all possible topics related to PHP. A user can find anything from installation guides, features, function references and a plethora of additional information in the FAQ section.
This section encourages programmers and developers to get involved with the evolution of PHP. There's useful links and information PHP sources. They provide information on small ways developers can help out as well as more involved activities.
The PHP main website appears to be a great resource for those of us who are just learning as well as seasoned developers and programmers. It shows that we will always be learning and the world of web development is ever changing so keeping a website like this bookmarked and reviewing it often would keep us at the top of our game.