A core WordPress developer, Ryan Boren, says that the wordpress4.3 CMS system will have a major change that is rewritten with node. JS and fully compatible with the previous version.
WordPress and node. js
Developers and the project itself have been focusing on node. js for a long time, and of course it's not a secret anymore, and node. JS allows you to write server-side code with JavaScript.
Our first use of node. JS was in version 3.7, and the grunt tool was added to our development cycle. Since then, more and more core versions have begun to use JAVASCRIPT,NB, the language is also considered to be the fastest-growing language in the 2015, not one of them.
It is important to note that it is unrealistic to discard PHP completely in the wordpress4.3 version, but the developer plans to use it in the base module, the core module, including Wp_query, Wp_error, and Wp_object_cache.
System requirements and back compatibility
As mentioned earlier, developers are not planning to abandon PHP completely in the latest version, and will also introduce the new version of the usage in detail to help you to be compatible and fully adaptable to existing themes and plugins.
A module called node2php to ensure that most of the compatibility work. It basically works by analyzing the compiled PHP binary code and then translating it into JavaScript, which is now in the test phase.
Another one has to mention compatibility issues is System compatibility, the new version of WordPress How to adapt to the current host environment. After all, not every company can quickly and provide a reliable node. JS runtime environment, especially in the current environment is very cheap.
Fortunately, a lot of vendors work closely with WordPress's core development team, and the new version can of course commit to full compatibility. The official plan is to release wordpress version 4.3 in October 2015.
Translation WordPress 4.3 will be rewritten with node. js