/**
* Unescape
*
* @param string $str
* @return string
*/
public function unescape($str)
{
$escaped = OauthHelper::regex('Escaped');
if (preg_match_all($escaped, $str, $matches) && count($matches) > 0) {
$str = preg_replace_callback($escaped, create_function('$matches', 'return chr(hexdec(substr($matches[0], 1)));'), $str);
}
return $str;
}
