PHP Security

[Anon]

I'm using this code:

<?php
if(!isset($PHP_AUTH_USER)) {
Header("WWW-authenticate: basic realm=\"UPDATE_PAGE\"");
Header("HTTP/1.0 401 Unauthorized");
$title="Login Instructions";
?>
<blockquote>
MESSAGE FOR FAILED LOGIN
please contact <a href="mailto:[e-mail]">Peter Forman</a>.
</blockquote>
<? php

exit;
}

else {
mysql_connect("localhost","cpinews_cpinews","******") or die("Unable to connect to SQL server");

mysql_select_db("cpinews_news") or die("Unable to select database");

$query = mysql_query("select * from users where login='$PHP_AUTH_USER' and password='$PHP_AUTH_PW'");

if(!mysql_num_rows($query)) {

Header("WWW-authenticate: basic realm=\"UPDATE_PAGE\"");

Header("HTTP/1.0 401 Unauthorized");

$title="Login Instructions";
?>
<blockquote>
MESSAGE FOR FAILED LOGIN
please contact <a href="mailto:[e-mail]">Peter Forman</a>.
</blockquote>
<?
exit;
}

mysql_free_result($query);

}
?>

I get this:

Parse error: parse error in /home/cpinews/public_html/cpi/73044.php on line 31

line 31 is:

exit;

any help would be appreciated.

[Anon]

Maybe, just maybe, it's this?

<? php

should be

<?php

Diego