PHP 7.2 (APCU)

https://janw.me/2017/installing-php7-2-rapsberry-pi/ https://stackoverflow.com/questions/47800957/apcu-is-not-enabled-when-installed-with-apt-get-on-php7-2-apache-stretch-image https://serverpilot.io/docs/how-to-install-the-php-apcu-extension add extension=apcu.so to /etc/php/7.2/mods-available/apcu.ini Extensions are loaded when the appropriate symlink is placed in /etc/php/7.2/fpm/conf.d/ with eg. ln -s /etc/php/7.2/mods-available/apcu.ini /etc/php/7.2/fpm/conf.d/20-apcu.ini So it is not necessary to add the line extension=apcu.so to any php.ini file. Tune PHP FPM: https://www.if-not-true-then-false.com/2011/nginx-and-php-fpm-configuration-and-optimizing-tips-and-tricks/