sudo service restart php code example

Example 1: ubuntu restart php-fpm

service php-fpm restart    # typical
service php5-fpm restart   # debian-style
service php7.0-fpm restart # debian-style PHP 7
service php7.2-fpm restart # debian-style PHP 7.2
service php7.4-fpm restart # debian-style PHP 7.4

Example 2: how to restart php-fpm on ubuntu

sudo /etc/init.d/php-fpm restart