server - PHP and Apache2 broken after upgrade to Ubuntu 16.04

I've been having a lot of trouble fixing up the remains of my server after upgrading to Xenial yesterday.

PHP apps run as a mess of code, and ownCloud 'can't be found on the server' anymore.

It may be something to do with these errors I get when trying to run Apache2 from the command line.

I hope I can get some help on this, a lot of computers rely on this thing :/

I'd provide some more logs, but they are huge and I wouldn't know what parts to provide.

Oh, and I get this error when trying to install PHP5, if this helps.

Thanks in advance.

EDIT: Here's the output from running 'apache2' from the command line:

Ubuntu 16.04 comes with PHP 7.0. You need to install libapache2-mod-php package and then disable all traces of PHP5.

1. Uninstall PHP5.x package: sudo apt-get purge php5-common (this will remove all PHP 5 packages.



2. Install default (7.0) PHP apache2 SAPI: sudo apt-get install libapache2-mod-php


3. If the apache2 is still broken do: sudo rm /etc/apache2/mods-enabled/php5.* to disable PHP5 mod and enable PHP 7.0 with sudo a2enmod php7.0.