Answers for "auto restart php-fpm service"

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

restart php service windows

To restart PHP on IIS, you actually need to restart IIS:

Click Start, click Run, type iisreset, and then click OK.
  
If iisreset command is not recognized, then click win and search 
"Turn windows features on or off" and tick the checkbox 
"Internet Information Service" and click ok and after completion try above 
process again.