yay -S --needed php php-apache

sudo mousepad /etc/httpd/conf/httpd.conf
comment the line:
#LoadModule mpm_event_module modules/mod_mpm_event.so

uncomment the line:
LoadModule mpm_prefork_module modules/mod_mpm_prefork.so

Place this at the end of the LoadModule list:

LoadModule php_module modules/libphp.so
AddHandler php-script .php

Place this at the end of the Include list:
Include conf/extra/php_module.conf

sudo mousepad /etc/php/php.ini
di uncomment
extension=mysqli.so

systemctl restart httpd

sudo systemctl start httpd
sudo systemctl stop httpd
sudo systemctl restart httpd
sudo systemctl status httpd