/**
* Returns the normalized parameters of the request
*
* This will be all (except oauth_signature) parameters,
* sorted first by key, and if duplicate keys, then by
* value.
*
* The returned string will be all the key=value pairs
* concated by &.
*
* @return string
*/
function get_signable_parameters()
{
// Include query parameters
$query_str = parse_url($this->http_url, PHP_URL_QUERY);
if ($query_str) {
$parsed_query = OAuthUtil::oauth_parse_string($query_str);
parse_str($query_str, $php_parsed_query);
if (OAuthUtil::oauth_http_build_query($parsed_query) != OAuthUtil::oauth_http_build_query($php_parsed_query)) {
$parsed_query = $php_parsed_query;
}
foreach ($parsed_query as $key => $value) {
$this->set_parameter($key, $value);
}
}
// Grab all parameters
$params = $this->parameters;
// Remove oauth_signature if present
if (isset($params['oauth_signature'])) {
unset($params['oauth_signature']);
}
return OAuthUtil::oauth_http_build_query($params);
}
