Multiple web pages ending in .php usually signify a poor codebase with a developer with poor web development knowledge.
LMAO or it means he didn't use a mod_rewrite doesn't really mean anything, if your basing code off that it ends in .php, then you probably need to learn to code.
Thats pretty much the case. Till now i didnt use mod_rewrite .. since i am not using Apache things are a bit more complex...