3.0 - Replace intval() with int typecasts

Don't think a cast is required at all; `__LINE__` already is an integer (`var_dump(__LINE__); // int 2`), however, possibly wrap the calculation in parentheses `(__LINE__ - 7)` because of the concatenation; alternatively cast the result to a string, instead of the concatenation, if that is the intention (`(string)(__LINE__ - 7)`)  ?