How to solve the problem (year|years|years) with one line of code?

Question

PHP

You need to write a function that has an integer number of years at the input, and at the output a string corresponding to the rules of the Russian language, for example, "21 years old", "24 years old", "18 years old". The key point is that the function works on the maximum possible range of years.
Of course, type options

switch ($cnt) {
    case 1:
    case 21:
    case 31:
    case 41:
      return $cnt.' год';
      break;
    case 2:
    case 3:
    case 4:
    case 22:
    case 23:
    case 24:
    case 32:
    case 33:
    case 34:
      return $cnt.' года';
      break;
    default:
      return $cnt.' лет';
  }

and

if( in_array($cnt, array(1, 21, 31, 41, 51, 61, 71, 81, 91)) ) return $cnt.' год';
  elseif( in_array($cnt, array(2, 3, 4, 22, 23, 24, 32, 33, 34, 42, 43, 44, 52, 53, 54, 62, 63, 64, 72, 73, 74, 82, 83, 84, 92, 93, 94)) ) return $cnt.' годa';
  else return $cnt.' лет';

unsuitable. )

What ideas? )))

Answer 1

return "$n " . ( ($n / 10) % 10 == 1 || $n % 10 > 4 || $n % 10 == 0 ? 'лет' : ($n % 10 == 1 ? 'год' : 'года') );

Kindergarten...

Answer 2

Well, take your own first option, but instead of comparing an integer, compare only the two least significant digits of the number)