Hey guys. Up until this point, I could bet that you could overwrite a default package by having a structure like this (assuming you want to overwrite some PHP parts):
Packages\User\PHP\Snippets\class-{-}.sublime-snippet
However… it seems that if you have a Packages\PHP\Snippets\class-{-}.sublime-snippet… it doesn’t overwrite it. Which is a bit odd if you’d like to use git packages but also having some customisations.