Valkey for PHP session data

PHP-FPM sessions can be written to Valkey:

php_admin_value[session.save_handler] = redis
php_admin_value[session.save_path] = "unix:///run/valkey-USERNAME/valkey-server.sock?auth[]=default&auth[]=PASSWORD"

See https://github.com/phpredis/phpredis?tab=readme-ov-file#php-session-handler

And https://www.php.net/manual/en/class.sessionhandler.php