base91_encode -- Encodes data with basE91

	string base91_encode ( string data )

base91_encode() returns data encoded with basE91. This encoding is designed to
make binary data survive transport through transport layers that are not 8-bit
clean, such as mail bodies.

basE91-encoded data takes at most 23% more space than the original data.

Example:
<?php
  require_once 'base91.php';
  $str = 'This is an encoded string';
  echo base91_encode($str);
?>

This example will produce:

nX,<:WRT%yV%!5:maref3+1RrUb64^M

-----

base91_decode -- Decodes data encoded with basE91

	string base91_decode ( string encoded_data )

base91_decode() decodes encoded_data ignoring non-alphabet characters and
returns the original data. The returned data may be binary.

Example:
<?php
  require_once 'base91.php';
  $str = 'nX,<:WRT%yV%!5:maref3+1RrUb64^M';
  echo base91_decode($str);
?>

This example will produce:

This is an encoded string