I agree with this as far as it goes, but I think @zaphar has the better answer: a tax app should never have been written in PHP to begin with. There's a fundam

I agree with this as far as it goes, but I think @zaphar has the better answer: a tax app should never have been written in PHP to begin with. There's a fundamental quandary in language design: accessibility to novice programmers and suitability for serious work are in opposition. Novices, being novices, are unable to appreciate this problem.