[php]base64_url_encode() and base64_url_decode

new_gist_file.php

<?php
// From: http://stackoverflow.com/questions/1374753/passing-base64-encoded-strings-in-url
function base64_url_encode($input) {
	return strtr(base64_encode($input), '+/=', '-_,');
}

function base64_url_decode($input) {
	return base64_decode(strtr($input, '-_,', '+/='));
}