public static final function frns(string $string, string $separator = '.'): string {
		return implode($separator, preg_split('/\\\/', trim(strtolower($string)), -
			1, PREG_SPLIT_NO_EMPTY));
	}
public static final function frns(string $string, string $separator = '.'): string {
		return implode($separator, preg_split('/\\\/', trim(strtolower($string)), -
			1, PREG_SPLIT_NO_EMPTY));
	}
public static final function frns ( string $ string , string $ separator = '.' ) : string { return implode ( $ separator , preg_split ( '/\\\/' , trim ( strtolower ( $ string ) ) , - 1 , PREG_SPLIT_NO_EMPTY ) ) ; }
Convert any qualifier name to a string with a given delimiter.

@param string $string
@param string $separator
@return string
Convert any qualifier name to a string with a given delimiter .