Security & bug fix releases
http://php.net/ChangeLog-7.php#7.1.18
http://php.net/ChangeLog-7.php#7.2.6
The PHP development team announces the immediate availability of PHP 7.2.6. This is a primarily a bugfix release which includes a memory corruption fix for EXIF. PHP 7.2 users are encouraged to upgrade to this version.
The PHP development team announces the immediate availability of PHP 7.1.18. All PHP 7.1 users are encouraged to upgrade to this version.