The main PHP.net site has posted the announcement(s) of the release of updates for the three supported versions of the language: 7.1.15, 5.6.34 & 7.2.3.
The PHP development team announces the immediate availability of PHP 7.1.15, 5.6.34 and 7.2.3. This is a security fix release, containing one security fix and many bug fixes. All [PHP] users are encouraged to upgrade to this version.
Fixes include changes to the DateTime handling, LDAP connectivity, Phar construction, PostgreSQL issues and changes to the SPL. You can get these latest versions either from the main downloads page or on windows.php.net for the Windows binaries.