zendframework/ZendSkeletonApplication — pull request #172 by garygolden (2013-03-28 15:36:25+00:00)
Title: Make chdir to parent directory obvious

This notation resolves two issues with single step:

1. It makes obvious that we go to upper directory.
dirname(__DIR__) looks confusing after a quick reading.
It made me think that it is some kind of protection
to surely get directory path on every OS.

2. Resolves symlinks.
realpath() makes a syscall to get a physical path.
It can help to avoid errors in some rare modules which doesn't
work correctly with symlinks.
I can't recall exactly but there were such cases in my practice
when application couldn't find the directory it operates on
because it was symlinked.