Java Security

Hi there!

I'm searching for a solution of the following problem: In my code, i generate the md5 hash for a password. This String is compared with an entry in a mysql database. The useradministration is php-based, so the md5 hashes of the passwords in the database are generated with PHP. Something like that:

(<?php md5($pw); ?>)

Now, my source of the hasher looks like that:

private static String md5(String string) {
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("MD5");
            md.update(string.getBytes("UTF-8"));
            String hash = (new BASE64Encoder()).encode(md.digest());
            System.out.println(hash);
            return hash;
        } catch (Exception e) {
            System.out.println(e.getMessage());
            return null;
        }
    }

The problem is: the two implementations (PHP and mine, or the MD of java, whatever) return different results.

Examples:

"Wayne"
Java: Q91UYeoJCxEVpOqrTufIDg==
PHP: 43dd5461ea090b1115a4eaab4ee7c80e

"test"
Java: CY9rzUYh03PK3k6DJie09g==
PHP: 098f6bcd4621d373cade4e832627b4f6

Does anybody of you see the mistake I made or has an Idea how to fix this problem?

Greetings and thx

commy