I am currently working on a big project (Joomla, over 8000 files) and I notice that some (not all) constants, methods, fields, etc. are marked with the warning "undefined". I am wondering if this is because the project is so big, or because I forgot some setting or because of something else.
Like I said, many of them don't get a warning, just some (at least a few in each file) and I am certain they are defined. Also I cannot see any difference in the ones that get the warning and those that do not?