public function upperCaseRoman($s, $match_mode = 'strict') : string
	{
		$result = RomanNumerals::romanNumeralMatchCallback(
			$s,
			$match_mode,
			function (array $matches) {
				if (empty($matches[1])) {
					return $matches[1];
				}
				return strtoupper($matches[1]);
			}
		);
		return $result;
	}
public function upperCaseRoman($s, $match_mode = 'strict') : string
	{
		$result = RomanNumerals::romanNumeralMatchCallback(
			$s,
			$match_mode,
			function (array $matches) {
				if (empty($matches[1])) {
					return $matches[1];
				}
				return strtoupper($matches[1]);
			}
		);
		return $result;
	}
public function upperCaseRoman ( $ s , $ match_mode = 'strict' ) : string { $ result = RomanNumerals :: romanNumeralMatchCallback ( $ s , $ match_mode , function ( array $ matches ) { if ( empty ( $ matches [ 1 ] ) ) { return $ matches [ 1 ] ; } return strtoupper ( $ matches [ 1 ] ) ; } ) ; return $ result ; }
Uppercases any Roman numerals found in the string.

@param $s
@param string $match_mode
@return string
Uppercases any Roman numerals found in the string .