eCommerce stacksAeroCommercePHPPHP PHP Create backup Remi repository CentOS 8 CentOS 7 CentOS 6 Install / downgrade Install PHP PHP 7.0 PHP 7.1 PHP 7.2 PHP 7.3 PHP 7.4 Update PHP PHP 7.0 PHP 7.1 PHP 7.2 PHP 7.3 PHP 7.4 OPcache settings /etc/php.ini settings PHP-FPM default pool Start PHP-FPM Configuration test Start PHP-FPM Start on boot