The PHP development team announces the immediate availability of PHP 7.1.15. This is a security fix release, containing one security fix and many bug fixes. All PHP 7.1 users are encouraged to upgrade to this version.
For source downloads of PHP 7.1.15 please visit the php.net downloads page. Windows binaries can be found on the PHP for Windows site windows.php.net/qa/. The list of changes is recorded in the ChangeLog.