Comment by atoav
If you ever find yourself in the situation where you have to decide whether 99 parses to year 1999 and what to do with 100 and where to draw the line between parsing the 90s and current years, you should probably pause, reath in andaout and take a long walk instead. And after you return you should scrap the whole thing and go back to the drawing board.
Implementing such a feature has not only no value, it has negative value. When you program libraries or interfaces you ahould think aboit how people will use it 95% of the time and mane that usecase as simple, predictable and free of potential footguns as possible. This is the opposite of that. It feels like something 15 year old me would have programmed after reading the first book on PHP and not something anybosy with any experience could have thought to be a good thing.