KohanaPHP » Kohana v3.x

I've got a case where I need to pass some encrypted data in the query string. However, the results of Encrypt::encode are not always URL-safe. There's a note on the user-contributed docs for base64_encode (http://us2.php.net/base64_encode) on how to implement a variant that is URL-safe. It would be handy to have that as an option for encoding/decoding data. I've extended the Encrypt class to get what I need, but since this is being passed between two separate applications there's more work in making sure that functionality is where I need it than if the core system supported it. Code sample from the above URL below:

<?php 
function base64url_encode($data) { 
  return rtrim(strtr(base64_encode($data), '+/', '-_'), '='); 
} 

function base64url_decode($data) { 
  return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT)); 
} 
?>