Regular expressions, filter option1 OR option2

Hello list :) Just a short question which I know it should be easy, but I'm no expert yet in regular expressions. I've got a nice little XML string, which is something like this but can be changed: <?xml version="1.0" encoding="utf-8"?> <boolean xmlns="http://tempuri.org/">false</boolean> The boolean value can be true or false, so what I want to do, is filter it. I've done it this way, but I know it can be improved (just because I love clean coding and also because I want to master regular expressions xD): $result = preg_match('/true/',$curl_response); if ($result == 0) $result = preg_match('/false/',$curl_response); I've also tried something like: $result = preg_replace('/^(true)|^(false)/','',$curl_response); // if not true OR not false => replace with empty and also '/^true|^false/' which doesn't seem to work. Any ideas to filter this kind of string in just one expression? Thanks in advance :) -- Mailed by: UnReAl4U - unreal4u ICQ #: 54472056 www1: http://www.chw.net/ www2: http://unreal4u.com/