The TutsPlus.com site has a new tutorial posted showing you how to upgrade your Linux server to run PHP 7.0, the latest major release of the PHP language.
PHP 7 was released last December. Once you've tested your code locally to run on it, it's time to upgrade your production server. Generally, I found that most of my sites run well on it.
However, I suspect that not many sites have upgraded yet. It's often safer and easier to stay on older releases. [...] But PHP 7 has now been out for nearly a year.
In today's episode, I'll walk you through my recommended approach to upgrading to PHP 7 on Ubuntu 14.x and resolving problems with PHPMyAdmin, which a lot of early upgraders ran into.
He starts by helping you identify any customizations that you might have related to PHP 5, specifically related to configuration options. He then provides the commands to remove PHP 5 packages from the system and add in the "ondrej/php" PPA for apt-get as the source for the PHP 7 packages. After a quick apt-get cleanup, he includes the commands to install the "php7" packages, enable a few extra modules and getting phpMyAdmin back up and in working order.