code: public function getFloat($min, $max)
      {
          if ($min > $max) {
              throw new InvalidArgumentException('Min cannot be greater than max');
          }
  
          $random01 = \mt_rand() / \mt_getrandmax();
  
          // [0, 1] -> [min, max]:
          // y = (max - min) * x + min
          return ($max - $min) * $random01 + $min;
      }
docs: Returns random float from given range.
  
  @param float $min The minimal value.
  @param float $max The maximal value.
  
  @return float
  
  @throws InvalidArgumentException If min is greater than max.