PlaneString::toString

public function toString($modifier = ''): string
{
	$case = $this->getOptions($modifier)['letterCase'] ?? null;

	$mbConstant = $this->getMultiByteConstant($case);
	if ($mbConstant !== null)
	{
		return mb_convert_case($this->value, $mbConstant);
	}

	return $this->value;
}