How to start/stop/restart/reload php7.0-fpm (php version 7.x) on Ubuntu/Debian Linux
$ sudo service php7.0-fpmstart
$ sudo service php7.0-fpm stop
$ sudo service php7.0-fpm restart # <- restart it
$ sudo service php7.0-fpm reload # <- reload it
Source: How to reload/restart php7.0-fpm / php5.0-fpm service – nixCraft