(07) PHP + PHP-FPM

**Install PHP-FPM (FPM : FastCGI Process Manager) to make PHP scripts be fast. **

1. Install PHP, refer to here.

2. Install PHP-FPM.

root@www:~# apt -y install php-fpm

3. Add Settings in Virtualhost you'd like to set PHP-FPM.

root@www:~# vi /etc/apache2/sites-available/default-ssl.conf
# add into <VirtualHost> - </VirtualHost>

    <FilesMatch \.php$>
        SetHandler "proxy:unix:/var/run/php/php8.2-fpm.sock|fcgi://localhost/"
    </FilesMatch>
</VirtualHost>

root@www:~# a2enmod proxy_fcgi setenvif

Considering dependency proxy for proxy_fcgi:
Enabling module proxy.
Enabling module proxy_fcgi.
Module setenvif already enabled
To activate the new configuration, you need to run:
  systemctl restart apache2

root@www:~# a2enconf php8.2-fpm

Enabling conf php8.1-fpm.
To activate the new configuration, you need to run:
  systemctl reload apache2

root@www:~# systemctl restart php8.2-fpm apache2 

4. Create [phpinfo] in Virtualhost's web-root you set PHP-FPM and access to it, then that's OK if [FPM/FastCGI] is displayed.

root@www:~# echo '<?php phpinfo(); ?>' > /var/www/html/info.php