getid3_id3v1::GenerateID3v1Tag( string $title, string $artist, string $album, string $year, int $genreid, string $comment, int|string $track = '' ): string

448	public static function GenerateID3v1Tag($title, $artist, $album, $year, $genreid, $comment, $track='') {449		$ID3v1Tag  = 'TAG';450		$ID3v1Tag .= str_pad(trim(substr($title,  0, 30)), 30, "\x00", STR_PAD_RIGHT);451		$ID3v1Tag .= str_pad(trim(substr($artist, 0, 30)), 30, "\x00", STR_PAD_RIGHT);452		$ID3v1Tag .= str_pad(trim(substr($album,  0, 30)), 30, "\x00", STR_PAD_RIGHT);453		$ID3v1Tag .= str_pad(trim(substr($year,   0,  4)),  4, "\x00", STR_PAD_LEFT);454		if (!empty($track) && ($track > 0) && ($track <= 255)) {455			$ID3v1Tag .= str_pad(trim(substr($comment, 0, 28)), 28, "\x00", STR_PAD_RIGHT);456			$ID3v1Tag .= "\x00";457			if (gettype($track) == 'string') {458				$track = (int) $track;459			}460			$ID3v1Tag .= chr($track);461		} else {462			$ID3v1Tag .= str_pad(trim(substr($comment, 0, 30)), 30, "\x00", STR_PAD_RIGHT);463		}464		if (($genreid < 0) || ($genreid > 147)) {465			$genreid = 255; // 'unknown' genre466		}467		switch (gettype($genreid)) {468			case 'string':469			case 'integer':470				$ID3v1Tag .= chr(intval($genreid));471				break;472			default:473				$ID3v1Tag .= chr(255); // 'unknown' genre474				break;475		}476 477		return $ID3v1Tag;478	}