CodeWord: Apokalyptik

I’m putting this here for documentation purposes… Because getting it right was a very frustrating ordeal (I’d never had to match both positively and negatively in the same regex before) /^(?(?!.+\.php)^.*(\.jpg|\.jpeg|\.gif|\.ico|\.png)|^$)/s what this is, essentially, saying is “true if the string doesnt match ^.+\.php and the string matches ^.*(\.jpg|\.jpeg|\.gif|\.ico|\.png)” The last bit: “|^$” never returns [...]