The PHP development group has officially announced the release of the latest alpha in the PHP 7.1.x series: PHP 7.1.0 Alpha 3. This is a preview release and should not be used for production applications.
The PHP development team announces the immediate availability of PHP 7.1.0 Alpha 3. This release is the last alpha for 7.1.0. All users of PHP are encouraged to test this version carefully, and report any bugs and incompatibilities in the bug tracking system.
This release includes new features including an Iterable type, HTTP/2 server push support, creating closures from callables and more precise float values. You can see the full list of additions and changes in the NEWS and UPGRADING files. If you're interested in trying out this latest alpha, you can get the latest source release from here and the Windows binaries here.