getid3_asf::GUIDtoBytestring( string $GUIDstring ): string

1656	public static function GUIDtoBytestring($GUIDstring) {1657		// Microsoft defines these 16-byte (128-bit) GUIDs in the strangest way:1658		// first 4 bytes are in little-endian order1659		// next 2 bytes are appended in little-endian order1660		// next 2 bytes are appended in little-endian order1661		// next 2 bytes are appended in big-endian order1662		// next 6 bytes are appended in big-endian order1663 1664		// AaBbCcDd-EeFf-GgHh-IiJj-KkLlMmNnOoPp is stored as this 16-byte string:1665		// $Dd $Cc $Bb $Aa $Ff $Ee $Hh $Gg $Ii $Jj $Kk $Ll $Mm $Nn $Oo $Pp1666 1667		$hexbytecharstring  = chr(hexdec(substr($GUIDstring,  6, 2)));1668		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  4, 2)));1669		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  2, 2)));1670		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  0, 2)));1671 1672		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 11, 2)));1673		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  9, 2)));1674 1675		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 16, 2)));1676		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 14, 2)));1677 1678		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 19, 2)));1679		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 21, 2)));1680 1681		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 24, 2)));1682		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 26, 2)));1683		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 28, 2)));1684		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 30, 2)));1685		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 32, 2)));1686		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 34, 2)));1687 1688		return $hexbytecharstring;1689	}