This is important. If you have a WordPress site, or any site that runs on PHP for that matter and your web host server has PHP 5 and it various versions, whether its PHP 5.4, 5.5, 5.6, then you need to upgrade to PHP 7 and higher quickly, before the
As a Wordfence, a web security company, whose Wordfence plugin is one of the most used security plugins on WordPress sites says, WordPress, Joomla, Drupal and many other popular website CMSs were written in a programming language called PHP.
PHP version 5 is about to reach end-of-life in 2018 and will stop receiving security updates by year end 2018.
What is End-Of-Life in Software?
In software lingo, when a software product reaches End-of-life or EOL in short, this means that software is no longer supported by software developers. Therefore, even if someone finds a security hole in that software, the developers will not fix it.
Now, many WordPress and other PHP websites remain on version 5.6 or older. Once support for PHP 5 ends, these sites are in a precarious position and will become exploitable as new PHP 5 vulnerabilities emerge without security updates.
Wordfence put together an a great post in FAQ format here and describes why PHP 5 is reaching end-of-life, what the timeline is and what to do about it. Share this post with others who manage PHP websites or use WordPress, because many WordPress sites are about to become more unsecure once this end of life milestone comes up.
You can find the FAQ post here.