title: How to update Apache's PHP?
body: <p>I installed Laravel 5.6, but it's not working because it requires PHP 7.2.
  I use Ubuntu 17, and installed Apache 2 and PHP 7.2 (7.1, 7.0) but when I use <code>phpinfo()</code> it shows php7.0.
  So how can I config Apache and set php7.2 instead of php7.0?</p>