A gentle reminder that we are only 2.5 months away from when support for PHP 5.6 will end.
Taking this date into account, it is probably sad that close to 80% of all PHP sites are still on PHP 5.6 and older (with 7.x having been around for three years).
So a) please, please upgrade to 7 if you havent yet. Nobody (including you) wants yet another compromised machine.
And b) with 7.3 being around the corner please, please upgrade to 7.2 or at least 7.1 and not 7.0. The latter will be out of support even a month earlier than 5.6.
c) If you dont have control over your PHP installation bug your host until he finally upgrades his systems or - if not - switch hosts.
d) Yes, some OS vendors will still issue security fixes if one of their still-supported versions came with PHP 5 but that has an expiration date too.
e) Dont forget to upgrade