Not a big deal, but this specifically seems to have a lot of code standard violations. It could be because of the nature of the code in that file, but running PHP code standard check and fixing atleast the low hanging fruits should be worth it :) .
20 should also make this irrelevant. This file generates invoices with the fpdf library, so it will go away and be replaced as we switch to another pdf library.
Not a big deal, but this specifically seems to have a lot of code standard violations. It could be because of the nature of the code in that file, but running PHP code standard check and fixing atleast the low hanging fruits should be worth it :) .