Upgrade to the specific php 7.1/7.2 from php 7.0 in Ubuntu 16.04 [duplicate]
There is no official PHP 7.1 in the Ubuntu 16.04 repos.
If you want PHP 7.1, there is a version available in ppa:ondrej/php
You can install it like this:
sudo add-apt-repository ppa:ondrej/phpsudo apt-get update- (optional)
sudo apt-get remove php7.0 -
sudo apt-get install php7.1(from comments)
Remember that this is not an official upgrade path. The PPA is well known, and is relatively safe to use.
The PPA has co-installable packages (you can have multiple versions of PHP installed from that PPA). ~muru