Restarting PHP on an NGINX server

# Note: prepend sudo if not root

# Using SysV Init scripts directly
/etc/init.d/php-fpm restart # typical
/etc/init.d/php8-fpm restart # debian-style

# Using service wrapper script
service php-fpm restart # typical
service php5-fpm restart # debian-style

# Using Upstart (e.g. ubuntu)
restart php5-fpm # typical (ubuntu is debian-based)
restart php-fpm # uncommon

# Using systemd (newer servers)
systemctl restart php-fpm.service    # typical
systemctl restart php5-fpm.service   # uncommon