public function getFractionalPart() : string
    {
        if ($this->scale === 0) {
            return '';
        }

        $value = $this->getUnscaledValueWithLeadingZeros();

        return \substr($value, -$this->scale);
    }
public function getFractionalPart() : string
    {
        if ($this->scale === 0) {
            return '';
        }

        $value = $this->getUnscaledValueWithLeadingZeros();

        return \substr($value, -$this->scale);
    }
public function getFractionalPart ( ) : string { if ( $ this -> scale === 0 ) { return '' ; } $ value = $ this -> getUnscaledValueWithLeadingZeros ( ) ; return \ substr ( $ value , - $ this -> scale ) ; }
Returns a string representing the fractional part of this decimal number.

If the scale is zero, an empty string is returned.

Examples: `-123.456` => '456', `123` => ''.

@return string
Returns a string representing the fractional part of this decimal number .