So today was interesting.

I had to extract the domain from an email address and compare the domain to a hard coded whitelist, nothing difficult, fuck takes 2 min really.

Except the project starts throwing 500 errors for no god damn reason, like seriously, I double check syntax, nope looks fine, run pho's syntax checker on the file
# php -l /path/to/file.php

Nope says it's all good.
Checks error log on server -> no log

OoooooooooKay then.

Comments out the few lines, saves, errors gone.

remove comments, error comes back.

Do this a few times, and magically the fucking thing stops throwing errors, now I haven't actually changed anything, and I know this project is so fragile I don't know how it stays running at times but fuck me this is a painful joke.