Error when updating Newznab+

C:\Users\Administrator>php.exe C:\xampp\htdocs\nnplus\misc\update_scripts\update
_releases.php

Deprecated: Assigning the return value of new by reference is deprecated in C:\x
ampp\php\PEAR\Config.php on line 80

Deprecated: Assigning the return value of new by reference is deprecated in C:\x
ampp\php\PEAR\Config.php on line 166

Notice: Use of undefined constant WWW_DIR - assumed 'WWW_DIR' in C:\xampp\htdocs
\nnplus\misc\update_scripts\update_releases.php on line 4

Warning: require_once(WWW_DIR/lib/releases.php): failed to open stream: No such
file or directory in C:\xampp\htdocs\nnplus\misc\update_scripts\update_releases.
php on line 4

Fatal error: require_once(): Failed opening required 'WWW_DIR/lib/releases.php'
(include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\nnplus\misc\update_scripts
\update_releases.php on line 4