Piwigo admin pass reset

<?php define('PHPWG_ROOT_PATH','/var/www/html/piwigo/'); include_once(PHPWG_ROOT_PATH.'include/config_default.inc.php'); include_once(PHPWG_ROOT_PATH.'local/config/config.inc.php'); include_once(PHPWG_ROOT_PATH.'include/functions.inc.php'); if (isset($conf['password_hash']) && !empty($conf['password_hash']) && function_exists($conf['password_hash']))  echo $conf['password_hash']('yournewpassword') . "\n"; else  echo "\$conf['password_hash'] not set or function not available: '" . $conf['password_hash'] . "'\n"; ?>