public static function FILTER_SANITIZE_ID($value)
	{
		$value = mb_strtolower($value, 'UTF-8');
		$value = preg_replace('/[^\p{L}0-9]+/u', ' ', $value);
		$value = preg_replace('/\s+/', '_', trim($value));
		
		return $value?:false;
	}