php5-auth-pam does not follow php standards

[Frank]

Description: Ubuntu 10.04 LTS
Release: 10.04

php5-auth-pam:
  Installed: 0.4-10ubuntu1
  Candidate: 0.4-10ubuntu1
  Version table:
 *** 0.4-10ubuntu1 0
        500 http://nl.archive.ubuntu.com/ubuntu/ lucid/universe Packages
        100 /var/lib/dpkg/status

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This is how it should work, produces warning:
$auth = pam_auth($username, $password, $error); // Warning: Error variable must be passed by reference in /home/frank/public_html/subscribertool/lib/classes/Login.class.php on line 35

This is how it works, but produces warning:
$auth = pam_auth(Login::$username, Login::$password, &$error); // Deprecated: Call-time pass-by-reference has been deprecated in /home/frank/public_html/subscribertool/lib/classes/Login.class.php on line 35

Should probably be fixed upstream.