if(defined(getpwnam($username))) {
    $message = $message.'<p>The Chosen Username Already Exists.</p>';
    $found_err = 1; }

##</code><code>##

Mon Jun 16 01:01:03 2003:myusername:mypassword:my@old.email:111.222.333.444
Mon Jun 16 01:01:04 2003:myusername2:mypassword2:my@old.email:213.111.231.444