title: Install Apache and PHP on different servers
body: <p>My customer insists on installing Apache-Php-MySQL on 3 different servers. He wants a 3 layer installation for security reasons (Is it 3 layer?).
  I know how to install and connect to MySQL on a different machine. But I have no experiences for separating and connecting to PHP of another machine. (some search results suggests PHP-FPM)</p>
  
  <p>Thanks for any help.</p>