src/Utils/Utils.php
public static function charCodeAt($string, $position)
    {
        $char = mb_substr($string, $position, 1, 'UTF-8');

        return self::ord($char);
    }
public static function charCodeAt($string, $position)
    {
        $char = mb_substr($string, $position, 1, 'UTF-8');

        return self::ord($char);
    }
Returns UTF-8 char code at given $positing of the $string

@param string $string
@param int    $position

@return mixed