nategood/httpful — comment on commit 379506584d77316718fe7916e95533826d360b69
File: downloads/httpful.php line 49
By zackdouglas:

Maybe [is_readable](http://php.net/manual/en/function.is-readable.php) is useful here? I've started changing all of my file_exists usages. It depends on how you would like to raise a failure: catchable false return value or uncatchable Exception.