Thanks, just as a side-note I really hate how php-mpos is written, it's horribly slow and doesn't use any kind of transactions whatsoever when working with the database, like it should.
Also uses float way too much and can cause lots of rounding errors.
If I end up having some time I was thinking of rewriting huge parts of it, at least to use innodb as storage engine, relations between tables and transactions to make it faster and safer (if you don't commit and script crashes everything gets rolled back automatically and you don't have to worry about partial updates, took me almost a full day to recover from one of those).