Flush the PHP OPcache

The PHP OPcache increases the performance of your shop by caching processed PHP source code in memory. The Savvii servers are configured to re-read a script when it is changed.

However, if you use a deploy method which switches to a new version of the code by replacing a symlink to a new release, PHP does not detect the change. This will cause strange things to happen.

If you use a deployment method which changes one or more symlinks to point to the new version of the PHP code, you will need to flush the OPcache.

Easy & Recommended: Reload PHP using SSH

Execute this line in [SSH](ssh access link), or preferably, in a script after the deploy to flush the PHP OPcache:

$HOME/bin/reload_php.sh

Note: if you are running our mh_queue_consumer.service, this will also be restarted with above script.

Advanced: Web Script

Create a file ~/httpdocs/flush_php.php containing:

<?php
opcache_reset();
clearstatcache(1);
echo "OK";

You can call this script in a browser or you can call it in an SSH shell:

curl -Lk "https://$VHOSTDOMAIN/flush_php.php"

In case this does not work because of domain issues, you can try:

curl -Lk "http://$VHOSTIP/flush_php.php"

A web script like this will allow you to flush the cache remotely, it is therefore recommended to restrict access to it using .htaccess